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I love this headphone amp/DAC’s confident sound, but it’s far from the only game in town
12:00 pm | October 18, 2025
Author: admin | Category: Audio Computers DACs Gadgets Hi-Fi | Comments: Off

FiiO QX13: Two-minute review

Another day inevitably brings another FiiO product – and today’s FiiO product is the QX13 USB headphone amp/DAC. It’s an established product type, sure, but anyone with even a passing interest in the company knows FiiO seldom does things by halves.

So $219 / £199 / AU$349 buys a small, beautifully made device built from either carbon fiber or aluminum, and fronted by some heftily toughened glass. On the inside there’s the usual FiiO over-engineering, from the ESS SAbre DAC arrangement to the Texas Instruments amplification, and on the outside there are a couple of audio outputs, and a small and extremely informative full-colour display (ideal for those who can read all the way down to the bottom line in the opticians without any help). FiiO even provides a protective leather case that attaches magnetically to your iOS or Android device in the interests of both tidiness and swankiness.

Connect via USB-C to a smartphone, games machine, laptop or anything else that could do with an audio leg-up, and the improvements are both obvious and wide-ranging. In almost every respect, but especially where soundstaging, detail retrieval and dynamic impetus are concerned, the QX13 is a significant step on in quality.

If it wasn’t for the device’s tendency to hit treble sounds with quite such vigor, it would be approaching ‘ideal’ and be part of the best portable DACs around.

FiiO QX13 headphone amp/DAC in its magnetic protective casing on a wooden surface

(Image credit: Future / Simon Lucas)

FiiO QX13 review: Price and release date

  • Release date: July 2025
  • Price: $219 / £199 / AU$349

The FiiO QX13 headphone amp/DAC is on sale now, and in the United States it sells for $219. In the United Kingdom it's around $219, while in Australia it goes for something like AU$349.

This puts it towards the top of the ‘USB headphone amp/DAC dongle’ market but, as we shall see, FiiO has done its best to make that price seem fair enough…

FiiO QX13 review: Features

  • ESS Sabre ES9027SPRO DAC
  • Texas Instruments op-amps
  • Powerful ‘desktop’ mode

You’ve got to hand it to FiiO – it hasn’t let the requirement for the QX13 to be as compact as possible prevent it absolutely piling on the specification.

At the heart of the product is an ESS Sabre ES9027SPRO digital-to-analog conversion chipset. Capable of dealing with resolutions up to a giddy 32bit/768kHz and DSD512, it features eight channels arranged in parallel and a couple of low-noise ES9312 regulators dealing with output matching on each audio channel. Amplification is provided by half a dozen Texas Instruments op-amps arranged to reduce crosstalk and minimize interference.

Thanks to this optimized layout and also to the efficiency of its heat dissipation, the QX13 can deliver comparable power to full-size headphone amplifiers when it's in ‘desktop’ mode. Meanwhile, its high-precision power regulator can adjust the headphone amplification where gain and output power is concerned, in real time.

Part of the efficiency of the heat dissipation is thanks to the carefully shielded digital and analog boards. This also, of course, allows for more precise signal processing at every stage. Once it’s decoded from digital to analog, the signal passes through several stages of expansion and enhancement in an effort to deliver as complete an account of the information as possible.

There’s more, of course – there’s always more when FiiO is involved. The use of XMOS crystal oscillators allows the QX13 to be compatible with the 10-band lossless PEQ that’s available via the web or the Android FiiO control app. UAC 1.0 mode means the QX13 is compatible with PlayStation 5, Nintendo Switch and other gaming devices. It’s compatible with the company’s compact ‘ESTICK’ power bank.

But by now you get the picture – FiiO seemingly has a limitless supply of kitchen sinks it’s prepared to throw at every device it manufactures.

Features score: 5 / 5

FiiO QX13 headphone amp/DAC on a wooden surface

(Image credit: Future / Simon Lucas)

FiiO QX13 review: Sound quality

  • Positive, detailed sound
  • Spacious and organized presentation
  • Rather over-confident high-frequency reproduction

Unsurprisingly, the FiiO QX13 passes the first test (‘does it improve on the unassisted sound of the average laptop or smartphone?’) in quite some style. It’s an altogether fuller, more convincing and more enjoyable listen than you can achieve simply by plugging your headphones into the output socket of a device like this.

It’s a remarkably open and organized listen. The soundstage it creates during a 24bit/96kHz FLAC file of Paul Simon’s 50 Ways to Leave Your Lover is expansive, carefully controlled and equally carefully laid out. Each element of recording relates naturalistically to each other, but each has a discrete pocket of space in which to operate; the sound is at once focused, unified and spacious. The spaces between each element are given the necessary prominence, and the QX13 keeps these silences very dark indeed.

Frequency response is fairly even. From the bottom end to the very top, the FiiO gives every area more-or-less equal emphasis – it’s slightly tilted towards the higher frequencies, but not fatally so. And at every point, it identifies, retains and reveals an impressive amount of detail. If there is minor, fleeting information regarding tone or texture in a recording, the QX13 has no problem placing it in convincing context.

It’s similarly adept when it comes to the dynamics of harmonic variation in a voice or an instrument, too, and where the broad dynamic shifts in intensity during a 16bit/48kHz FLAC file of Beak’s Carob Honey are concerned, the QX13 fairly steams through them. The amount of dynamic headroom it has available is significant.

The bottom of the frequency range is tightly controlled, and the attack and decay of individual notes and/or hits is so closely observed that rhythmic expression is confident and direct. The midrange communicates in the same positive, eloquent way; there’s really no mistaking a vocalist's attitude when they’re described by the FiiO.

From the lowest frequencies to the highest, there’s a common tonality to the QX13’s presentation that creates a strong impression of singularity and of ‘performance’. At the top of the frequency range, though, the FiiO overplays its hand just a little. It attacks high-frequency information with absolute zeal, and it doesn’t take much (even a mild lack of sympathy where source machine, content or partnering headphones are concerned will do it) for treble sounds to become slightly hard and overly assertive.

This is what I mean by ‘slightly titled towards the higher frequencies’, and it’s this trait that means the QX13 doesn’t pass the second test (“does it represent value for money when judged against its peers?”) with anything like the same breeziness as it does the first. That this FiiO has a fistful of sonic talents is not up for question, but whether it’s the best-sounding device of its type and price must remain a live question.

Sound quality score: 4 / 5

Display of the FiiO QX13 headphone amp/DAC, showing speed playback options, on a wooden surface

(Image credit: Future / Simon Lucas)

FiiO QX13 review: Design

  • Carbon-fiber or aluminum construction
  • Magnetic leather case for ultimate iPhone convenience
  • 64 x 31 x 13mm (HxWxD)

You’ve two choices where the finish of your QX13 is concerned: carbon-fiber or aluminum.

The former consists of 21 layers of material that adds up, according to FiiO, to a device that’s six times stronger than steel. This version of the QX13 weighs in at just 33.7g, whereas the aluminum alternative is a whole 39.2g, but it does feature a laser-engraved rear panel that, suggests FiiO, makes for an ‘elegant yet advanced’ appearance. Mind you, you won’t be seeing much of either material if you slip the QX13 into its protective leather case. FiiO has, in one of those ‘so simple it’s brilliant’ moments of inspiration, made the case magnetic - so it will cling to your iPhone in the manner of a MagSafe. If you’re an Android user, there’s a magnetic ring provided in the packaging to perform the same function.

The little 64 x 31 x 13mm (HxWxD) device is beautifully made, no matter the material you prefer, and the standard of finish is very good, too. FiiO is to be congratulated on its use of third-generation Corning high-strength glass for the majority of the front panel – its scratch-resistance is second to none.

Design score: 5 / 5

Cover for the FiiO QX13 headphone amp/DAC on a wooden surface

(Image credit: Future / Simon Lucas)

FiiO QX13 review: Usability & setup

  • 50.5mm IPS screen
  • Hybrid 3.5mm output
  • 60- and 120-step volume adjustment scales

As far as setting up the QX13 goes, things couldn’t really be more straightforward. It features two USB-C sockets, one of which is for charging the battery and the other for data transfer – both can be connected simultaneously, and FiiO provides a short length of braided USB-C / USB-C cable to help.

There’s a switch to engage or disengage ‘desktop’ mode, and at the top of the device there are 3.5mm and balanced 4.4mm output sockets. The smaller one can be specified as an SPDIF if you want to connect your QX13 to a larger system digitally, so it’s just a question of making the necessary connections and away you go.

Or, at least, away you go provided you have the required dexterity to get the FiiO set up to your satisfaction. The screen is bright and clear, most certainly - but it tries to include too much information in one go (file type, file size, volume level, mode confirmation, UAC type, EQ setting, you name it). The set-up menus themselves are typically FiiO in their thoroughness but the size of the font that’s been used is necessarily small, and the few physical buttons available to navigate them are small too.

Ideally you’ll have eyes like a hawk and fingers like cocktail sticks. Otherwise there could be a fair bit of back-and-forth to get what you want, and some squinting to ensure you’ve got it once the device is functioning.

Usability & setup score: 3.5 / 5

3.5mm and 4.4mm balanced ports of the FiiO QX13 headphone amp/DAC on a wooden surface

(Image credit: Future / Simon Lucas)

FiiO QX13 review: Value

You can’t judge the value for money of a product like this on the basis of the amount of stuff your money buys – a portable USB DAC/headphone amp needs to be small and light. No, you judge it on the way it’s made, the way it’s finished, the way it’s specified and, most importantly, the way it makes your USB-C device and headphones sound.

And in all these respects, it’s very decent value for money indeed, but the quirks of its audio character mean it’s not quite the no-brainer FiiO was undoubtedly hoping for.

Value score: 4 / 5

FiiO QX13 headphone amp/DAC on a wooden surface

(Image credit: Future / Simon Lucas)

Should you buy FiiO QX13?

Buy it if...

Your USB-C-equipped device could do with some audio assistance
The QX13 improves on the native sound of smartphones and laptops to quite a degree.

You have some good wired headphones
And if you have some good wired headphones on a cable that terminates in a balanced 4.4mm connection, even better.

You admire some thorough (and small-scale) engineering
How does FiiO squeeze it all in? It’s a question as old as electricity itself…

Don't buy it if...

Your eyesight isn’t all it might be
Some of the information displayed on the screen is beyond ‘tiny’.

Your fingers are of similar size to those of King Charles III
The physical controls require deft, rather than sausagey, digits.

You’re especially sensitive to high-frequency sound
The FiiO attacks the top of the frequency range in quite determined fashion.

FiiO QX13 review: Also consider

Helm Audio Bolt
It’s not as thoroughly specified as the FiiO QX13, but the Helm Audio Bolt is not to be underestimated where audio quality is concerned. If you can live without a display and a magnetic holster, this is a very compelling alternative.
Read our in-depth Helm Audio Bolt review to learn more

Magnetic case of the FiiO QX13 headphone amp/DAC on a wooden surface

(Image credit: Future / Simon Lucas)

How I tested the FiiO QX 13

  • Various headphones
  • Various audio file types and sizes
  • Various sources of music

I mostly used the FiiO QX13 with my Apple MacBook Pro, but I also tried it out with a Google Pixel 8 smartphone and a FiiO M15S. Two of these three products benefited no end from the QX13’s d-to-a conversion and headphone amplification.

I listened to plenty of music of various genres, various file sizes and types, and I listened for well in excess of a working week.

First reviewed October 2025

I love this headphone amp/DAC’s confident sound, but it’s far from the only game in town
12:00 pm |
Author: admin | Category: Audio Computers DACs Gadgets Hi-Fi | Comments: Off

FiiO QX13: Two-minute review

Another day inevitably brings another FiiO product – and today’s FiiO product is the QX13 USB headphone amp/DAC. It’s an established product type, sure, but anyone with even a passing interest in the company knows FiiO seldom does things by halves.

So $219 / £199 / AU$349 buys a small, beautifully made device built from either carbon fiber or aluminum, and fronted by some heftily toughened glass. On the inside there’s the usual FiiO over-engineering, from the ESS SAbre DAC arrangement to the Texas Instruments amplification, and on the outside there are a couple of audio outputs, and a small and extremely informative full-colour display (ideal for those who can read all the way down to the bottom line in the opticians without any help). FiiO even provides a protective leather case that attaches magnetically to your iOS or Android device in the interests of both tidiness and swankiness.

Connect via USB-C to a smartphone, games machine, laptop or anything else that could do with an audio leg-up, and the improvements are both obvious and wide-ranging. In almost every respect, but especially where soundstaging, detail retrieval and dynamic impetus are concerned, the QX13 is a significant step on in quality.

If it wasn’t for the device’s tendency to hit treble sounds with quite such vigor, it would be approaching ‘ideal’ and be part of the best portable DACs around.

FiiO QX13 headphone amp/DAC in its magnetic protective casing on a wooden surface

(Image credit: Future / Simon Lucas)

FiiO QX13 review: Price and release date

  • Release date: July 2025
  • Price: $219 / £199 / AU$349

The FiiO QX13 headphone amp/DAC is on sale now, and in the United States it sells for $219. In the United Kingdom it's around $219, while in Australia it goes for something like AU$349.

This puts it towards the top of the ‘USB headphone amp/DAC dongle’ market but, as we shall see, FiiO has done its best to make that price seem fair enough…

FiiO QX13 review: Features

  • ESS Sabre ES9027SPRO DAC
  • Texas Instruments op-amps
  • Powerful ‘desktop’ mode

You’ve got to hand it to FiiO – it hasn’t let the requirement for the QX13 to be as compact as possible prevent it absolutely piling on the specification.

At the heart of the product is an ESS Sabre ES9027SPRO digital-to-analog conversion chipset. Capable of dealing with resolutions up to a giddy 32bit/768kHz and DSD512, it features eight channels arranged in parallel and a couple of low-noise ES9312 regulators dealing with output matching on each audio channel. Amplification is provided by half a dozen Texas Instruments op-amps arranged to reduce crosstalk and minimize interference.

Thanks to this optimized layout and also to the efficiency of its heat dissipation, the QX13 can deliver comparable power to full-size headphone amplifiers when it's in ‘desktop’ mode. Meanwhile, its high-precision power regulator can adjust the headphone amplification where gain and output power is concerned, in real time.

Part of the efficiency of the heat dissipation is thanks to the carefully shielded digital and analog boards. This also, of course, allows for more precise signal processing at every stage. Once it’s decoded from digital to analog, the signal passes through several stages of expansion and enhancement in an effort to deliver as complete an account of the information as possible.

There’s more, of course – there’s always more when FiiO is involved. The use of XMOS crystal oscillators allows the QX13 to be compatible with the 10-band lossless PEQ that’s available via the web or the Android FiiO control app. UAC 1.0 mode means the QX13 is compatible with PlayStation 5, Nintendo Switch and other gaming devices. It’s compatible with the company’s compact ‘ESTICK’ power bank.

But by now you get the picture – FiiO seemingly has a limitless supply of kitchen sinks it’s prepared to throw at every device it manufactures.

Features score: 5 / 5

FiiO QX13 headphone amp/DAC on a wooden surface

(Image credit: Future / Simon Lucas)

FiiO QX13 review: Sound quality

  • Positive, detailed sound
  • Spacious and organized presentation
  • Rather over-confident high-frequency reproduction

Unsurprisingly, the FiiO QX13 passes the first test (‘does it improve on the unassisted sound of the average laptop or smartphone?’) in quite some style. It’s an altogether fuller, more convincing and more enjoyable listen than you can achieve simply by plugging your headphones into the output socket of a device like this.

It’s a remarkably open and organized listen. The soundstage it creates during a 24bit/96kHz FLAC file of Paul Simon’s 50 Ways to Leave Your Lover is expansive, carefully controlled and equally carefully laid out. Each element of recording relates naturalistically to each other, but each has a discrete pocket of space in which to operate; the sound is at once focused, unified and spacious. The spaces between each element are given the necessary prominence, and the QX13 keeps these silences very dark indeed.

Frequency response is fairly even. From the bottom end to the very top, the FiiO gives every area more-or-less equal emphasis – it’s slightly tilted towards the higher frequencies, but not fatally so. And at every point, it identifies, retains and reveals an impressive amount of detail. If there is minor, fleeting information regarding tone or texture in a recording, the QX13 has no problem placing it in convincing context.

It’s similarly adept when it comes to the dynamics of harmonic variation in a voice or an instrument, too, and where the broad dynamic shifts in intensity during a 16bit/48kHz FLAC file of Beak’s Carob Honey are concerned, the QX13 fairly steams through them. The amount of dynamic headroom it has available is significant.

The bottom of the frequency range is tightly controlled, and the attack and decay of individual notes and/or hits is so closely observed that rhythmic expression is confident and direct. The midrange communicates in the same positive, eloquent way; there’s really no mistaking a vocalist's attitude when they’re described by the FiiO.

From the lowest frequencies to the highest, there’s a common tonality to the QX13’s presentation that creates a strong impression of singularity and of ‘performance’. At the top of the frequency range, though, the FiiO overplays its hand just a little. It attacks high-frequency information with absolute zeal, and it doesn’t take much (even a mild lack of sympathy where source machine, content or partnering headphones are concerned will do it) for treble sounds to become slightly hard and overly assertive.

This is what I mean by ‘slightly titled towards the higher frequencies’, and it’s this trait that means the QX13 doesn’t pass the second test (“does it represent value for money when judged against its peers?”) with anything like the same breeziness as it does the first. That this FiiO has a fistful of sonic talents is not up for question, but whether it’s the best-sounding device of its type and price must remain a live question.

Sound quality score: 4 / 5

Display of the FiiO QX13 headphone amp/DAC, showing speed playback options, on a wooden surface

(Image credit: Future / Simon Lucas)

FiiO QX13 review: Design

  • Carbon-fiber or aluminum construction
  • Magnetic leather case for ultimate iPhone convenience
  • 64 x 31 x 13mm (HxWxD)

You’ve two choices where the finish of your QX13 is concerned: carbon-fiber or aluminum.

The former consists of 21 layers of material that adds up, according to FiiO, to a device that’s six times stronger than steel. This version of the QX13 weighs in at just 33.7g, whereas the aluminum alternative is a whole 39.2g, but it does feature a laser-engraved rear panel that, suggests FiiO, makes for an ‘elegant yet advanced’ appearance. Mind you, you won’t be seeing much of either material if you slip the QX13 into its protective leather case. FiiO has, in one of those ‘so simple it’s brilliant’ moments of inspiration, made the case magnetic - so it will cling to your iPhone in the manner of a MagSafe. If you’re an Android user, there’s a magnetic ring provided in the packaging to perform the same function.

The little 64 x 31 x 13mm (HxWxD) device is beautifully made, no matter the material you prefer, and the standard of finish is very good, too. FiiO is to be congratulated on its use of third-generation Corning high-strength glass for the majority of the front panel – its scratch-resistance is second to none.

Design score: 5 / 5

Cover for the FiiO QX13 headphone amp/DAC on a wooden surface

(Image credit: Future / Simon Lucas)

FiiO QX13 review: Usability & setup

  • 50.5mm IPS screen
  • Hybrid 3.5mm output
  • 60- and 120-step volume adjustment scales

As far as setting up the QX13 goes, things couldn’t really be more straightforward. It features two USB-C sockets, one of which is for charging the battery and the other for data transfer – both can be connected simultaneously, and FiiO provides a short length of braided USB-C / USB-C cable to help.

There’s a switch to engage or disengage ‘desktop’ mode, and at the top of the device there are 3.5mm and balanced 4.4mm output sockets. The smaller one can be specified as an SPDIF if you want to connect your QX13 to a larger system digitally, so it’s just a question of making the necessary connections and away you go.

Or, at least, away you go provided you have the required dexterity to get the FiiO set up to your satisfaction. The screen is bright and clear, most certainly - but it tries to include too much information in one go (file type, file size, volume level, mode confirmation, UAC type, EQ setting, you name it). The set-up menus themselves are typically FiiO in their thoroughness but the size of the font that’s been used is necessarily small, and the few physical buttons available to navigate them are small too.

Ideally you’ll have eyes like a hawk and fingers like cocktail sticks. Otherwise there could be a fair bit of back-and-forth to get what you want, and some squinting to ensure you’ve got it once the device is functioning.

Usability & setup score: 3.5 / 5

3.5mm and 4.4mm balanced ports of the FiiO QX13 headphone amp/DAC on a wooden surface

(Image credit: Future / Simon Lucas)

FiiO QX13 review: Value

You can’t judge the value for money of a product like this on the basis of the amount of stuff your money buys – a portable USB DAC/headphone amp needs to be small and light. No, you judge it on the way it’s made, the way it’s finished, the way it’s specified and, most importantly, the way it makes your USB-C device and headphones sound.

And in all these respects, it’s very decent value for money indeed, but the quirks of its audio character mean it’s not quite the no-brainer FiiO was undoubtedly hoping for.

Value score: 4 / 5

FiiO QX13 headphone amp/DAC on a wooden surface

(Image credit: Future / Simon Lucas)

Should you buy FiiO QX13?

Buy it if...

Your USB-C-equipped device could do with some audio assistance
The QX13 improves on the native sound of smartphones and laptops to quite a degree.

You have some good wired headphones
And if you have some good wired headphones on a cable that terminates in a balanced 4.4mm connection, even better.

You admire some thorough (and small-scale) engineering
How does FiiO squeeze it all in? It’s a question as old as electricity itself…

Don't buy it if...

Your eyesight isn’t all it might be
Some of the information displayed on the screen is beyond ‘tiny’.

Your fingers are of similar size to those of King Charles III
The physical controls require deft, rather than sausagey, digits.

You’re especially sensitive to high-frequency sound
The FiiO attacks the top of the frequency range in quite determined fashion.

FiiO QX13 review: Also consider

Helm Audio Bolt
It’s not as thoroughly specified as the FiiO QX13, but the Helm Audio Bolt is not to be underestimated where audio quality is concerned. If you can live without a display and a magnetic holster, this is a very compelling alternative.
Read our in-depth Helm Audio Bolt review to learn more

Magnetic case of the FiiO QX13 headphone amp/DAC on a wooden surface

(Image credit: Future / Simon Lucas)

How I tested the FiiO QX 13

  • Various headphones
  • Various audio file types and sizes
  • Various sources of music

I mostly used the FiiO QX13 with my Apple MacBook Pro, but I also tried it out with a Google Pixel 8 smartphone and a FiiO M15S. Two of these three products benefited no end from the QX13’s d-to-a conversion and headphone amplification.

I listened to plenty of music of various genres, various file sizes and types, and I listened for well in excess of a working week.

First reviewed October 2025

Questyle’s tiny wireless DAC is the Bluetooth audio upgrade your phone so desperately needs
11:30 pm | September 22, 2025
Author: admin | Category: Audio Computers DACs Gadgets Hi-Fi | Tags: , , | Comments: Off

Questyle QCC Dongle Pro: Two-minute review

You may not realise it, but your phone and your wireless headphones don’t always agree on how good your music should sound. It’s a question of compatibility, and it can be a thorny issue.

Bluetooth audio codecs are the invisible lines of code that translate your music (whether streamed from a subscription service or stored locally on your phone) into something that can be transmitted wirelessly to your headphones, earbuds, or portable speakers.

All Bluetooth products support SBC, a codec that provides basic 'vanilla' audio quality, but when it comes to high-quality advanced codecs, like LDAC and aptX Adaptive (which preserve far more of your music’s detail), it’s the wild west out there. Some Android handsets support both. Some just support one. iPhones (in fact, all Apple devices) support neither. Support on the headphones/earbuds side of the equation can be equally messy – and it doesn't always follow that the more you pay, the more codecs your buds (or cans) will support.

So wouldn’t it be nice if there were a tiny, simple (yet powerful) gadget you could plug into any phone, tablet, computer, or game console that would assure you’ve always got support for these codecs? Behold – the Questyle QCC Dongle Pro.

Plug it in, open the app, and pair your headphones. Done. You’re now listening wirelessly at the highest possible quality (perhaps even losslessly) and you didn’t even have to mess around in Android’s Developer Options.

All of this makes the Questyle QCC Dongle Pro a very attractive little accessory for anyone who wants to maximize their listening experience.

One of the best portable DACs around – and more specifically, one of the best wireless Bluetooth DACs we've tested? Let's get to it.

The Questyle QCC Dongle Pro with a smartphone to denote size, on a light wooden table

Oh, it's red and no mistake (Image credit: Future)

Questyle QCC Dongle Pro review: Price and release date

  • Release date: August 29, 2025
  • Price: $99 (around £70; AU$150)

$99 may seem like a lot for what you get. After all, it is tiny – and this device doesn’t make music or even play music; it just makes the music you already have access to sound better, with no guesswork.

I’ve also tried the $50 FiiO BT11, a nearly identical-looking product that, on paper at least, does all the same things. But it’s so maddeningly difficult to use, I’d happily pay the difference for the QCC Dongle Pro.

Still, there is another option. If you don’t need LDAC (perhaps because your Android phone already supports it), you can get the aptX-family-only QCC Dongle for $69 and save yourself some cash.

Elsewhere (and if you've got hard-to-drive headphones and a little more to spend), we love the FiiO BTR17 for its amplification powers on top of its codec mastery, and TR's audio editor still uses the FiiO BTR7 – both around $200 / £175 / AU$279.

Questyle QCC Dongle Pro review: Specs

Questyle QCC Dongle Pro: specs

Dimensions

25mm x 10mm x 15mm

Weight

2.5 grams

Supported codecs

SBC, aptX, aptX HD, aptX Adaptive (including aptX Lossless), LDAC

Supported interfaces

USB-C, USB-A (UAC 1, UAC 2)

System compatibility

WinXP/Vista/Win7/Win8/Win10/Win11/Linux/Android/HarmonyOS/macOS/iOS/iPadOS

Bluetooth version

5.4

Power draw

37mA

Questyle QCC Dongle Pro review: Features

  • Excellent codec support
  • Easy, intuitive app
  • Works with almost all USB-equipped devices

A helpful app lets you control the dongle’s two main functions: getting it paired with your headphones and picking which codec and optional settings you want to use. An LED on the QCC Dongle Pro gives visual feedback on its pairing status as well as which family of codec is currently in use – a reassuring feature.

Better yet, as long as your headphones or earbuds support Bluetooth Multipoint, it’s possible to connect them to the dongle and your phone simultaneously. Doing so maintains your ability to adjust the headphones’ settings via their mobile app (if any).

Oh, and one more thing: the dongle also supports USB Audio Class 1 (UAC 1), which is a spec-speak way of saying you can use it as a wireless audio transmitter with gaming consoles like Nintendo Switch and PlayStation families – devices that don’t play nicely with run-of-the-mill USB Bluetooth dongles. Full disclosure: I didn’t test this feature.

You can use it as a transmitter for a PC or Mac, too, though with one caveat: there’s no Windows or macOS app, so you’ll need to initially pair your preferred headphones using the mobile app on a phone, then move the dongle over to your PC. It will automatically re-pair with your headphones and then you simply need to choose the Dongle Pro from your computer’s sound output menu.

Worried about the Dongle Pro sapping your phone’s battery life? Don’t be. With a 37mA draw, Questyle estimates that even if you used it intensively (e.g., with LDAC) for 10 hours straight, you’d only dent an iPhone 16’s full battery capacity by about 10%. Using aptX Adaptive would consume less juice. I didn’t notice any impact on my day-to-day use of my iPhone.

Questyle QCC Dongle Pro three screen-grabs of a smartphone running the QCC Dongle Pro, on blue background

The bulk of my testing was done with the Sennheiser IE900 or the Austrian Audio 'The Composer' (Image credit: Questyle)

The QCC Dongle Pro is so easy and effective that it’s hard to find flaws. But if I were to nitpick, I’d point to the fact that the Questyle app doesn’t give audio nerds as much control over codec behavior as, say, Android’s Developer Options, or the uber-handy Bluetooth Codec Changer app.

For instance, purists often want to avoid additional resampling between their source of digital music and the output that gets to their headphones. With the apps/settings I mentioned above, you can set LDAC’s bit-depth and sampling rate to match that of your source. The QCC Dongle Pro doesn’t provide this level of control. The same goes for LDAC’s bitrate; however, you can nonetheless choose to favour sound quality over connection stability, which should accomplish the same thing.

I might also note that the dongle can’t support simultaneous Bluetooth connections. So if you were hoping to connect a set of wireless earbuds using LDAC and a set of headphones using aptX HD so you can hear the difference, I’m afraid you’ll have to find another way of satisfying your inner scientist.

Features score: 4.5 / 5

The Questyle QCC Dongle Pro with a smartphone to denote size, on a light wooden table

Note the 'wings' (Image credit: Future)

Questyle QCC Dongle Pro review: Design

  • Tiny and featherweight
  • Fits most phone cases
  • Might block adjacent ports

The QCC Dongle Pro can plug directly into any device that can output audio over USB. At 2.5 grams, it weighs less than half as much as a single AirPods Pro earpiece. On its own, it will snap into USB-C ports, and a small ledge lets it protrude about two millimeters, making it compatible with many 3rd-party protective phone cases. It also comes with an adapter for gadgets that are still rocking USB-A ports. The only devices it can’t support are older iPhones/iPads with Lightning ports.

It’s a phone-friendly design, as long as you don’t mind using wireless charging while it’s plugged in. For laptops, especially those like the Apple MacBook Air with just two, closely spaced USB-C ports, the Dongle Pro forces the same choice, but without the fallback of wireless charging: You can have better Bluetooth audio or you can charge your computer, but not both.

Design score: 4.5 / 5

The Questyle QCC Dongle Pro with a smartphone to denote size, on a light wooden table

Everything in its right place… (Image credit: Future)

Questyle QCC Dongle Pro review: Sound quality

  • Perfect match for LDAC/aptX devices
  • Lets you choose which codec to use when more than one will work

How does it perform? Brilliantly. Which is to say, when I use it on an iPhone 16 in either LDAC or aptX Lossless mode, with a compatible set of headphones, and then compare it to a phone with these codecs built in (e.g., Motorola ThinkPhone), they sound the same to me. I’m not sure I could ask for anything more.

Sony’s WH-1000XM6 (LDAC) revealed the subtle details in Dire Straits’ You And Your Friend that tend to go missing when listening via AAC. Similarly, Sennheiser’s aptX Lossless compatible Momentum True Wireless 4 Earbuds were able to tame the blurry bass notes and crunchy highs that I typically hear when playing Bob Dylan’s Man in the Long Black Coat.

Given how convenient it is to pop the Dongle Pro into the bottom of my iPhone, I can easily see it becoming a permanent fixture in my daily listening life.

Sound quality score: 5 / 5

The Questyle QCC Dongle Pro with a smartphone to denote size, on a light wooden table

This white light (for aptX Lossless) was oddly hard to come by when using sources able to handle it… (Image credit: Future)

Questyle QCC Dongle Pro review: Value

  • Pricey compared to other transmitters
  • Unmatched codec support
  • Perfect size/shape for mobile use

Though a pricey little device, you need to look at the QCC Dongle Pro in the context of your other options.

Most companies that make USB-C Bluetooth transmitters that sell for between $25-$55 on Amazon come with one or more compromises. They’re primarily intended for PC use, so they’re often equipped with a USB-A interface. Even the ones with USB-C tend to stick out too far and could easily snap off during portable use. The Dongle Pro’s one direct competitor, the $50 FiiO BT11, is a bargain by comparison – but I found it much harder to use.

Value score: 4/5

The Questyle QCC Dongle Pro with a smartphone to denote size, on a light wooden table

Note the new 'rails' on the casework to help with cooling (Image credit: Future)

Should you buy the Questyle QCC Dongle Pro?

Attribute

Notes

Rating

Features

Gives any phone or PC the most popular hi-res Bluetooth audio codecs.

4 / 5

Sound quality

Works as well as any phone with these codecs built in.

5 / 5

Design

Tiny, lightweight, and elegant. If only it were a tad narrower, it would be perfect.

4.5 / 5

Value

Pricey, but worth it.

4 / 5

Buy it if...

You’re the kind of person who wants to maximize sound quality
For now, wired connections are still better than Bluetooth, but with the Questyle QCC Dongle Pro (and compatible headphones), you may not hear the difference.

You own a recent iPhone
iPhones don't come with LDAC or aptX baked in, and this is arguably the easiest (and smallest) way to get those onboard. View Deal

Don't buy it if...

You don’t know (and don’t care) about codecs
If you're not bothered about lossless/hi-res audio, or compression – as long as your headphones just work –
the QCC Dongle Pro isn't for you. Its only reason to exist is to serve those who care deeply about sound. If that’s not you, great! You’ve got one less device in your life.

You’re an iPhone 14 (or older) owner
Without Lightning compatibility, the QCC Dongle Pro only works with USB-C-equipped iPhones (and iPads).

Questyle QCC Dongle Pro review: Also consider

Product

Questyle QCC Dongle Pro

FiiO BTR11

Dimensions

25mm x 10mm x 15mm

28mm x 9mm x 21mm

Weight

2.5 grams

3 grams

Supported codecs

SBC, aptX, aptX HD, aptX Adaptive (including aptX Lossless), LDAC

SBC, aptX, aptX HD, aptX Adaptive (including aptX Lossless), LDAC

Supported interfaces

USB-C, USB-A (UAC 1, UAC 2)

USB-C, USB-A (UAC 1, UAC 2)

System compatibility

WinXP/Vista/Win7/Win8/Win10/Win11/Linux/Android/HarmonyOS/macOS/iOS/iPadOS

WinXP/Vista/Win7/Win8/Win10/Win11/Linux/Android/HarmonyOS/macOS/iOS/iPadOS

Bluetooth version

5.4

5.4

Power draw

37mA (LDAC)

22mA (static)

FiiO BTR11
On paper, this very affordable ($50) dongle is a carbon copy of the QCC Dongle Pro, so why wouldn’t you just buy it instead? Well, if you’re only interested in using it with an Android phone, it’s definitely worth considering.

That’s because, unlike the QCC Dongle Pro, the BT11 isn’t Apple MFi certified. I’m not saying a product has to be MFi certified to work with iPhones, but in this case, it seems to make a big difference.

Whereas the QCC Dongle Pro just works when you plug it into an iPhone, I found the BT11 suffered from lag and, at times, couldn’t communicate with its companion app at all.

This is unfortunate since the BT11 has one skill the QCC Dongle Pro lacks: the ability to connect to two or more audio devices simultaneously.

Its construction and design aren’t as nice as the Dongle Pro, nor is it as sleek (it sticks out further from the USB-C port). Still, for half the price, maybe that doesn’t matter.
Read more about FiiO BTR11 and FiiO's other DACs

The Questyle QCC Dongle Pro with a smartphone to denote size, on a light wooden table

iFi makes strong design choices and you love to see it (Image credit: Future)

How I tested the Questyle QCC Dongle Pro

  • Tested for 2 weeks
  • Used it at home and while at the gym
  • Predominantly tested using Apple Music on an Apple iPhone 16, but also: Google Pixel 7 Pro, Apple MacBook Air M1

Testing the Questyle QCC Dongle Pro was primarily a case of comparisons. In other words, how easy was it to use, and how did the sound quality compare to a smartphone with the same Bluetooth Codecs built in?

To do this, I paired the Dongle Pro first with the Sony WH-1000XM6 (to test LDAC performance) and then with the Sennheiser Momentum True Wireless 4 Earbuds (to test aptX Adaptive/Lossless), with the Dongle Pro plugged into an iPhone 16.

Since both devices support Bluetooth Multipoint, I was able to pair them simultaneously with a Motorola ThinkPhone, which supports both codec families.

While using the same Apple Music Playlist on both the iPhone and the ThinkPhone, I swapped back and forth between these two sources, listening for any perceptible differences. I couldn’t detect any.

For additional testing, I swapped the dongle over to my MacBook Air and a Google Pixel 7 Pro. Both performed without issue.

First reviewed September 2025

Campfire’s portable USB headphone amp/DAC proves an interesting listen but you should try before you buy
6:30 pm | August 16, 2025
Author: admin | Category: Audio Computers DACs Gadgets Hi-Fi | Tags: | Comments: Off

Campfire Audio Relay: Two-minute review

Campfire Audio of Portland, Oregon is not, on the face of it, the most likely company to start competing in the portable USB headphone amp/DAC market. After all, this is a company that revels in doing things its own way, and with a product like this, there’s little scope for individualism.

So the Relay is an unremarkable-looking device by the company’s standards, but it’s certainly compact and well-made enough to compete. Between its AKM 4493 SEQ DAC chip with wide file and resolution compatibility, and its choice of balanced or unbalanced analog outputs, though, it’s specified to a high standard, too. Its basic user interface doesn’t give any indication of the resolution of the file that’s playing, though, which looks a bit remedial against its most obvious and most capable rivals.

In action, the Relay is a revealing, organized, nicely unified listen, one that’s endlessly forthright for better or for worse. Its upfront nature suits some recordings much more than it suits others, it must be said, and while there’s always a market for a hefty dose of sonic excitement it’s not the sort of attitude that automatically lends itself to long listening sessions.

One of the best portable DACs around? Maybe more 'best of the rest', but certainly one to consider if you can road test it first.

Side panel of the Campfire Audio Relay headphone DAC on a wooden surface

Oh, it's red and no mistake (Image credit: Future / Simon Lucas)

Campfire Audio Relay review: Price and release date

  • Release date: July 2025
  • Price: $229 / £229 / AU$399

The Campfire Audio Relay USB headphone amp/DAC is on sale now, and in the company's native United States it costs $229. In the United Kingdom it's £229, while in Australia it goes for AU$399.

Of course, it’s not as if the Relay is your only choice. We’ve heard and enjoyed alternatives from the likes of Audioquest, Helm and iFi lately, so the Campfire Audio has some stiff competition.

Campfire Audio Relay review: Features

  • AKM 4493 SEQ DAC
  • Balanced and unbalanced outputs
  • DSD and PCM 32bit/768kHz

Products such as this tend to have quite a restricted feature-set. And while this is also true of the Relay, what it’s got is right on the money.

Digital audio information comes in via the USB-C 2.0 slot on the top of the device. From there it’s delivered to an AKM 4493 SEQ DAC chipset that Campfire Audio alighted on for its “analog warmth” and “incredible tonality”. It’s capable of dealing with DSD and PCM content of up to 32bit/768kHz resolution, which really should be plenty.

Once the AKM has converted it, the analog information is output via one of two low-noise, high-output drivers – one feeds a single-ended 3.5mm output, the other a 4.4mm balanced alternative, both of which are on the bottom of the Relay.

Features score: 5 / 5

Output ports of the Campfire Audio Relay headphone amp/DAC on a wooden surface

Note the 'wings' (Image credit: Future / Simon Lucas)

Campfire Audio Relay review: Design

  • 57 x 23 x 10mm (HxWxD)
  • Aluminum casework
  • Only one finish available

In an admirable show of restraint, Campfire Audio has delivered a portable USB headphone amp/DAC that’s identifiably a portable USB headphone amp/DAC. It can’t have been easy – remember, this is a company that takes every opportunity to go to town where the design of its products is concerned.

About the Relay's only flourish is a little bit of angularity and asymmetry to the anodized aluminum casework. Campfire Audio provides a microfiber cloth and padded pouch to keep the finish in tip-top condition.

The casework itself is a usefully tidy 57 x 23 x 10mm (HxWxD) and the rear panel (which is made of plastic) features a little window affording a glimpse of the AKM DAC chip.

Design score: 4.5 / 5

Rear panel of the Campfire Audio Relay headphone amp/DAC (showing the AKM DAC chip) on a wooden surface

Everything in its right place… (Image credit: Future / Simon Lucas)

Campfire Audio review: Sound quality

  • Forward, direct presentation
  • Good tonal balance
  • Endlessly upfront audio balance can be fatiguing

Connected to an Apple MacBook Pro via USB-C and with a pair of Sennheiser IE900 IEMs inserted to the 4.4mm output, the Campfire Audio Relay proves – not especially surprisingly – to offer a considerable improvement over the audio performance the laptop can muster by itself. In some ways, the upgrade is quite dramatic.

A 24bit/96kHz FLAC file of My Crud Princess by No Joy delivered by the Tidal app illustrates the point explicitly. The Relay is a forward, very positive listen that’s able to reveal a lot of detail in the recording – it has a good facility for giving even the more transient, fleeting occurrences the correct amount of weighting and puts them into convincing context. Its presentation is reasonably spacious (though its direct character means there’s not the greatest amount of ‘front/back’ space on the otherwise well-defined soundstage), and it ensures every element gets the sort of elbow room it needs in order to express itself.

The tonal balance is judicious, even if Campfire Audio’s suggestion that it’s “incredible” is stretching things a bit. Frequency response, too, is very nicely judged. From the top of the frequency range down to the bottom, the Relay is even-handed and plays no favorites. Low-frequency stuff is deep and solid, with good shape to bass sounds and sufficient control to attack that momentum levels are high and rhythms are described naturalistically.

The impressive control of attack and decay applies throughout the frequency range, in fact, which allows the Relay to present recordings of all types in a convincingly unified manner. It’s especially adept through the midrange, where voices in particular are packed with information regarding character and attitude as well as tone and texture.
Problems, such as they are, stem from the Campfire Audio’s default attitude of drive, attack and endless positivity. This direct and unequivocal nature is quite exciting on first acquaintance, and undeniably so when you’re listening to something like Da Funk by Daft Punk, but over time it’s a stance that can become quite wearying.

‘A good time all the time,’ can take its toll, and the Relay’s inability to relax or even ease back just a little, even when playing something as pastoral as Peter Broderick’s And It’s Alright, means you’re likely to become fatigued sooner rather than later.

Sound quality score: 4 / 5

Campfire Audio Relay headphone amp/DAC, connected to Sennheiser IE900 IEMs, on a wooden surface

The bulk of my testing was done with the Sennheiser IE900 or the Austrian Audio 'The Composer' (Image credit: Future / Simon Lucas)

Campfire Audio review: Usability & setup

  • Wide compatibility with source players…
  • Although earlier Windows devices will require a driver
  • Rudimentary user interface

On the front panel there’s a company logo that glows red when the Relay is operating, and blinks in a shade of lilac when any changes are made via the control buttons.

There’s one button on the right edge of the Relay - it deals with ‘play/pause’, ‘skip forwards/backwards’ and can toggle between ‘high gain’ and ‘low gain’. Two buttons on the left edge handle ‘volume up’ and ‘volume down’ - press and hold both at the same time and the device begins to cycle through its six different filter settings.

Campfire Audio recommends filter #5 (super slow roll-off) for optimal performance, which does rather make me wonder what the point of the other five settings is. It also recommends setting the volume of your source device to ‘maximum’ and then using the Relay to control volume – it has 60 volume increments, so you shouldn’t have too much difficulty getting to exactly the output level you’d like.

The company includes a 6cm length of braided, branded USB-C to USB-C cable to connect the Relay to your laptop or smartphone. The Relay is compatible with Windows, Mac OS, Android and iOS devices, though Windows 7/8 will require a driver to be downloaded.

Usability & setup score: 4/5

Campfire Audio Relay headphone DAC box displaying button functions

This white light (for aptX Lossless) was oddly hard to come by when using sources able to handle it… (Image credit: Future / Simon Lucas)

Campfire Audio Relay review: Value

This is a lot of money for not much stuff, it’s true, but the effect this minimal amount of stuff can have on the music you’re listening to can be quite profound.

Value score: 4/5

Campfire Audio Relay headphone DAC on a wooden surface

Note the new 'rails' on the casework to help with cooling (Image credit: Future / Simon Lucas)

Should you buy Campfire Audio Relay?

Buy it if...

You have an ordinary laptop or smartphone
The Relay will turn it into a viable source of music.

You own some half-decent headphones…
…especially if they have a 4.4mm balanced connection option. The Campfire Audio will absolutely help make the most of them.

You like an upbeat kind of sound
There’s a perkiness and a forwardness to the Relay’s interpretation of music that's bordering on the relentless.

Don't buy it if...

Your iOS device has a Lightning connector
Campfire Audio says, “Lightning connection features a power-limiting mechanism that restricts the performance of your Relay.”

You’re interested in knowing the resolution of the file you’re listening to
You can find out, of course, but only by looking at your source player. The Relay won’t tell you.

You’re no Henry Ford
You can have any colour of Campfire Audio Relay you like as long as it’s black.

Campfire Audio Relay review: Also consider

Helm Audio Bolt
The Helm is not quite as impressively specified as the Relay, but it’s a very effective little device nevertheless. And it’s usefully cheaper than the Campfire Audio.
Read our in-depth Helm Audio Bolt review to learn more

iFi GO Link Max
More affordable still is the iFi GO Link Max, and on a pound-for-pound basis it remains the best USB headphone amp/DAC around. iFi knows exactly what’s what where products like this are concerned.
Read our full iFi GO Link Max review

Campfire Audio Relay headphone DAC on a wooden surface

iFi makes strong design choices and you love to see it (Image credit: Future / Simon Lucas)

How I tested the Campfire Audio Relay review:

  • Various headphones
  • Various audio file types and sizes
  • Various sources of music

I didn’t use it all day every day, but I kept the Campfire Audio Relay connected to either my FiiO M15S Digital Audio Player or my Apple MacBook Pro for well over a week, which is more than enough time to establish what it’s capable of.

I listened to lots of different types of music, in various file types and of lots of different resolutions, and I listened both indoors and outdoors.

I used expensive IEMs via the 4.4mm balanced output and absolutely bog-standard over-ear headphones connected to the 3.5mm unbalanced output.

First reviewed August 2025