PSB Alpha iQ: One-minute review

The Alpha iQ from Canada’s PSB Speakers is the company’s first active-streaming model: a very compact bookshelf design that nevertheless produces superb sound with surprising dynamic and bass abilities. Like other examples of the best wireless speakers, On-board Wi-Fi, USB, and aptx HD Bluetooth give users plenty of streaming options, and it uses the BluOS ecosystem for multiroom playback and control. 

The BluOS Controller iOS/Android app (MacOS and Windows versions are also available) used by the Alpha iQ is highly capable but occasionally quirky to navigate, though AirPlay and Roon (the Alpha iQ is “Roon Ready”) provide further streaming options. The iQ also has a turntable-ready phono input and an HDMI eARC port for the best TVs, so connection flexibility here is excellent.

Listeners who value accurate, true-to-life musical sound will be well pleased, though those seeking maximum head-bang-per-buck may be disappointed. Nonetheless, the Alpha iQs are more than ready to fill any up to solidly medium-sized room with convincing levels of lifelike musical sound. 

PSB Alpha iQ review: Price & release date

• Released September 2022
• Priced at $1,299 / £1,099

The PSB Alpha iQ was released in September 2022 and is available in the US, UK, Europe and directly from the PSB Speakers website. At the time this review posted, the price for the Alpha iQ had dropped to $999 in the US. 

PSB Alpha iQ review: Specs

PSB Alpha iQ review: Features

• Powered speaker pair
• HDMI eARC and phono inputs
• BluOS app used for setup and control

The Alpha iQ’s two speakers are not identical, though each builds in a pair of amplifiers, of 30 and 60 watts respectively, for the tweeter and woofer. But the “secondary” speaker has no rear-panel features at all beyond an IEC power-cord socket and a pinhole reset-button access. All connections are on the main speaker, which can be assigned left or right status at setup, while the secondary speaker receives a digital signal wirelessly from its mate. (I could not find official word on the Alpha iQ’s internal or inter-speaker resolution, but believe it to be 24-bit/192 kHz.) The crossovers, driver EQ, and smart limiting are DSP-based. 

Inputs on the main speaker include HDMI eARC, phono (moving-magnet cartridges only), an optical digital audio port, and a 3.5-inch stereo minijack input. Other connections include a subwoofer output, Ethernet network port, a USB port, and an AC power input.

A small play/pause/skip touch-panel is handsomely set into the main speaker’s top panel. No remote control is provided, as it is presumed that the BluOS app will serve as the primary user interface. This puts the BluOS app, which bakes in access to every major streaming service (and quite a few more) and is also required for installation and setup, front and center.

The new BluOS 4.0 app that’s used for streaming and control of the Alpha iQs proved a very worthwhile update – really, an overall re-design. Where I found the previous BluOS version to be occasionally confusing, and needlessly (I thought) complicated, 4.0 proved simpler, smoother, and altogether more logically laid out and organized.

That said, this is a review of the Alpha iQ speakers not of the BluOS app, so I’ll be brief. The new BluOS app’s Home Screen shows your most-used sources or services, recent stations, and a quintet of icons across the bottom to select Favorites, Music (streaming services, inputs, or network “shares”), Players (you might have multiple BluSound speakers or components in different rooms), and a Search panel.

Navigation is fairly straightforward – much more so, in my view, than the earlier versions of the app. A “now playing” bar across the bottom, which shows the current player, track and scrolling title data, a mini album-art panel, and play/pause and volume buttons. This last is a two-step process; you must first touch the Volume icon, which switches to a volume slider that you can then adjust.

• Features score: 5/5

PSB Alpha iQ review: Sound quality

• Natural sound balance
• Stable and precise stereo imaging
• Finite level and bass extension

The PSB Alpha iQs scored highly when it came to sound quality. Both male and female vocals were consistently natural and projected well out into the listening space. The little Alphas also went to about 45 Hz or so with honest tonality and definition. For example, on a track like Bonnie Bramlett’s rendition of the standard “Cry Me a River,” the low “F” in the bass guitar (about 44 Hz) was solid, but the low “C” below it was audibly a bit lighter when compared directly to a much larger, fuller-range speaker. 

Classical chamber music and small-combo jazz were unmitigated delights, and even orchestral recordings (Stravinsky) and reference-grade rock (Steely Dan) sounded suitably big, balanced, and impressively detailed and defined, with tight, stable stereo imaging, and plenty of output. Volume, however, was finite: when asked for more, the Alpha iQs simply failed to increase loudness, while their onboard “smart” limiting and equalization forestalled any audible distortion.

Connecting a powered subwoofer to the Alpha iQ's sub output automatically applies a high-pass filter at 80 Hz, which achieves two advantages. First, it extends system response downwards to the capability of the sub; second, it removes the burden of reproducing deep bass from the little Alpha iQs, yielding a significant gain in overall clean level. 

With my everyday subwoofer connected, the Alpha iQs became the crux of a full-range, full-level system, one that proved entirely capable of delivering a big, demanding recording like Charles Ives’ “A Concord Symphony” (the “Concord” piano sonata brilliantly orchestrated by the late Henry Brant) with visceral impact, breadth, and deep, reverberant, symphonic-bass-drum thwacks.

Imaging was fairly “tight.” By that I mean it didn’t expand much beyond the speakers or deliver an exaggerated illusion of front-to-back depth, but it was very precise in locating instruments and voices on the soundstage, and in projecting centered voices or soloists well out into the room. 

Partly inspired by this trait, I tried the Alpha iQs for a bit as desktop speakers. Despite the fact that they’re a little big for such deployment, they sounded terrific up close this way, with generally fine accuracy and a more dramatic, close-in stereo effect. But the PSBs suffered a bit from a more blousy mid-bass and slightly congested vocal range, likely due to sonic reflections from the desk and computer monitor screen surfaces. The lack of any DSP equalization for such placement, as many similar designs incorporate, was a missed opportunity here.

I briefly used the HDMI eARC input to confirm operation with my Sony OLED TV, which worked as expected. I also spun a few LPs from my classic Rega Planar turntable with its equally classic Shure V-15III moving magnet cartridge doing the honors, and this sounded as excellent as I expected. And as already mentioned, connecting my compact sub to the Alpha iQ’s subwoofer output transformed the little PSBs into a full-blown, full-range, high-end experience.

• Sound quality score: 5/5

PSB Alpha iQ review: Design

• Compact bookshelf design
• Blue, orange, yellow, black or white matte lacquer finishes
• 2-way “tweeter under” configuration

The PSB Alpha iQ speakers are compact-bookshelf size and borderline small enough for desktop use. They are available in blue, orange, yellow, black or white matte lacquer finishes. My black pair showed first-rate fit and finish and attention to detail. 

The Alpha iQs have an unusual, “tweeter-under” design, meant to be located “upside-down” with the 4-inch woofer above the 0,75-inch tweeter to direct the “in-phase lobe” (i.e. the best-balanced sound) to the listener’s ears. With a multi-color LED integrated into the tweeter, and slim bright-work accent rings around each driver, it’s a very handsome rig. The cabinets are vented by rear-panel ports (the rear panel and front baffle are aluminum, while speaker’s top, bottom, and sides are the usual MDF wood-composite). 

• Design score: 4/5

PSB Alpha iQ review: Value

• Pricier than similar options
• Can accommodate both analog and streamed sources
• Added value if already in BluOS ecosystem

The PSB Alpha iQs are relatively pricey compared to similar options such as the SVS Prime Wireless Pro ($899.99) and Elac Debut ConneX ($399.98). Both the PSB and SVS feature an array of digital and analog inputs for connecting external sources, including HDMI ARC for a TV connection, and the SVS also features DTS Play-Fi for high-res multiroom streaming.

Where the PSB shows its value is in its excellent BluOS streaming and control app, wide-ranging connectivity, and great overall sound quality. The compact wireless streaming speakers category is a competitive one, however, with basic streaming-only options from brands like Sonos and Apple eating up much of the pie, so the ultimate value of the Alpha iQs will primarily lie in how sold you are on the BluOS app and ecosystem.

• Value score: 3.5/5

Should you buy the PSB Alpha iQ?

Buy it if…

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PSB Alpha iQ review: Also consider

PSB Alpha iQ review: How I tested

• Tested with music streamed via BluOS app from Qobuz, Tidal and other services
• Auditioned in same studio as several compared speakers and in “desktop audio” setup
• Tested over several weeks, listened to for more than 20 hours hours total

I had the PSB iQ pair for well over a month, and used them for casual music and TV audio for a week-plus before critical auditions. I played music via BluOS from Qobuz, Tidal, Apple Music/Classical, and my own local music file library, including both high-resolution and standard-rez/lossless sources. I also (briefly) streamed via Bluetooth from my iPhone XS and (also briefly) LPs from a decades-old but still-capable Rega Planar turntable.

I had several active and passive speakers, including my long-term Energy Veritas 2.2 monitors, SVS Prime Wireless, and KEF LS-60 in the same studio for direct comparison.

You can read TechRadar's review guarantee here.

• First reviewed: December 2023