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PSB Stratus Mini bookshelf speakers in black ash — front view with grilles off

PSB Stratus Mini pair — angled view showing the cabinets

PSB Stratus Mini pair — angled view from the opposite side

PSB Stratus Mini pair with grilles fitted

PSB Stratus Mini speakers — rear view showing the gold binding posts and model labels

PSB

Stunning PSB Stratus Mini Bookshelf speakers in Black Ash

$595.00

Out of stock

Other bookshelf speakers in stock now

$445.00

PSB Image B15 Bookshelf Speakers — Black Ash | Made in Canada

$245.00

$110.00

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Gorgeous PSB Bookshelf Speakers in Real Wood Veneer Imagine Mini$445.00Ships

PSB Image B15 Bookshelf Speakers — Black Ash | Made in Canada$245.00Ships

PSB Compact Bookshelf Speakers Intro LR$110.00Ships

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Description

PSB Stratus Mini Bookshelf Speakers — Black Ash | Canada

Made in Canada, the PSB Stratus Mini is a standout bookshelf speaker from PSB’s flagship consumer series — compact in form, but engineered without compromise to the sonic principles that earned the Stratus line its enduring reputation.

The Mini was designed by Paul Barton in close collaboration with Canada’s National Research Council, where NRC’s anechoic research facilities allowed PSB to measure and refine driver behaviour and cabinet resonance to a standard that most speaker manufacturers simply cannot access. The result is a speaker that is reliably, honestly neutral — not flavoured to impress on a brief audition, but built to reward long listening sessions with natural timbre, stable imaging, and easy dynamic composure. This is why the Stratus Mini has remained a firm recommendation in the used market long after its production run ended.

The 19mm aluminium dome tweeter with ferrofluid cooling is a fully proprietary PSB design, optimised for unusually even off-axis dispersion — critical for maintaining a wide, stable soundstage in real listening rooms where listener position varies. The 165mm polypropylene woofer with rubber surround and a substantial 567g magnet structure is engineered for linear high-output performance, with excursion capability that belies the cabinet’s modest dimensions. The 24 dB/octave Linkwitz-Riley crossover at 2,200 Hz ensures clean, seamless driver integration with minimal phase anomaly at the crossover point. The front-firing 2″ port allows placement closer to a rear wall than most rear-ported designs, and the -10 dB LF cutoff of 34 Hz is genuinely impressive for a speaker of this size.

The black ash cabinets are solidly built and present very well in VG condition, with the rounded, refined aesthetic typical of the Stratus series.

Radique’s Take: Unassuming. Fluid. Respectable. At 23 lbs each, these are top-of-the-line bookshelf speakers from PSB — and some of our very favourite speakers in this form factor.

From the Manufacturer

PSB says it best: “Alas, a bookshelf speaker with audiophile performance. The Stratus Mini is the perfect addition to applications where a larger speaker simply won’t fit, yet does not sacrifice the sonic integrity of the system. The Stratus Mini shares a highly evolved aluminum-dome tweeter design platform — like each and every PSB driver, a completely proprietary design — with a unique combination of performance factors. Exceptional extension yields outstanding accurate treble, tremendous dynamic linearity delivers the clarity of details both loud and soft for which Stratus speakers are famous, and unusually even, broad dispersion promotes superbly true-to-life imaging and soundstage. Together, these superb transducers enable the Stratus models’ smooth, accurate reproduction and remarkable dynamic potential.”

Specifications

Type: 2-way bass reflex bookshelf speaker, Made in Canada

Tweeter: 19mm (3/4″) aluminium dome with ferrofluid

Woofer: 165mm (6.5″) polypropylene cone, rubber surround, 32mm voice coil, 567g magnet

Crossover: 2,200 Hz, 24 dB/octave Linkwitz-Riley

Frequency response: 50 Hz – 21 kHz

LF cutoff: 34 Hz (-10 dB)

Sensitivity: 88 dB (1W/1m)

Nominal impedance: 4 ohms

Recommended amplifier power: 15–200 W

Cabinet design: Bass reflex, 2″ front-firing port

Internal volume: 0.67 cu ft (18.9 L)

Finish: Black ash

Dimensions: (Width x Height x Depth) 8.75 x 15.5 x 13.25 inches (222 x 394 x 337 mm)
Weight: 23 lbs (10.4 kg) each

A genuinely special pair of Made-in-Canada bookshelf speakers — NRC-tuned, honestly neutral, and built to a standard that holds up decades after production. Stands recommended for best performance.

Purchase with Confidence

Backed by Radique Audio’s 90-day warranty and our perpetual trade-back policy, you can purchase with confidence.

⭐ Don’t Just Take Our Word For It

Radique Audio holds over 600 customer ratings averaging 4.97 stars across six public platforms — Facebook Marketplace, Kijiji, Canuck Audio Mart, Google and others. Every rating lives somewhere we don’t control, so you can read the originals yourself, including the less flattering ones. See what our customers say. 👉

Additional information

Weight	48 lbs
Dimensions	17.25 × 24 × 19.5 in

About brand

PSB at Radique

We service PSB, too. Bring us your own PSB speakers and subwoofers, including Image tweeter replacements for repair, servicing or restoration (speakers up to 80 lbs each), with a 90-day warranty on the work. See our Audio Service page

PSB began in the summer of 1972 in St. Jacobs, Ontario, where Paul Barton and two high-school friends started building speakers. The name stands for Paul and Sue Barton. PSB says every speaker it makes is voiced in the National Research Council's anechoic chambers here in Ottawa. We carry PSB towers, bookshelf speakers, centre channels and subwoofers. We've had more than 440 PSB listings so far, covering nearly 90 different models, second only to our other big Canadian brand, Paradigm. Every used PSB here is inspected, tested and serviced as required, then photographed in-house and covered by our Bumper-to-Bumper Warranty and Perpetual Trade-Back Program. Don't see the model you want? Tell us on First Dibs and we'll email you when one arrives.

Our five best-selling PSB models so far: the Alpha Intro LR bookshelf speakers, the Image 8C centre, the Image 4T towers, the Alpha SubZero i subwoofer and the Alpha B bookshelf speakers.

The PSB story, 1972 to today

Paul Barton founded PSB in St. Jacobs, Ontario, in the summer of 1972 with two high-school friends, and named it for himself and Sue Barton, his high-school sweetheart and now his wife. PSB stayed in St. Jacobs for about its first eight years.

The Ottawa connection. In 1973 or 1974 (sources differ) PSB's Beta II caught the attention of Dr. Floyd Toole at the National Research Council in Ottawa, and Barton has used the NRC's Ottawa facilities since 1974. PSB says every speaker it makes is still voiced in the NRC's anechoic chambers.

Lenbrook and Stratus. The Lenbrook Group of Pickering, Ontario bought PSB in the mid-1980s (PSB's own timeline says 1985), and PSB is now based in Pickering. The Stratus series began in the late 1980s, and Stereophile first reviewed the Stratus Gold in 1991.

Alpha, Image and beyond. The budget Alpha launched in 1991, and more than 50,000 pairs had sold by 2000. The Image series replaced the Century series in 1999, the Platinum flagship followed in 2002, then Synchrony in 2007 and Imagine in 2008. PSB marked its 50th anniversary in 2022 with the Passif 50.

Which PSB is which?

Early models (1970s and 1980s): the Beta II, Avanté II, Passif II and Project B2, then the R series after the Lenbrook purchase.

Stratus (late 1980s to the 2000s): the upper line, including the Mini, Silver, Gold and Gold i. The Gold is a three-way with a 10" woofer.

Alpha (1991 to today): the entry line, including the Alpha A/V, Alpha B, Alpha B1 and later the Alpha P5. Our best-selling Alpha Intro LR and Alpha B come from this family.

Image (1999 to the 2010s): one step above Alpha. Our best-selling Image 8C centre and Image 4T towers come from this family.

Platinum (2002), Synchrony (2007) and Imagine (2008): the higher lines of the 2000s.

SubSeries and SubZero: PSB's powered subwoofers, such as the Alpha SubZero i we sell often.

Buying used PSB: what to check

Where it was made. Lines launched from about 2008 onward, such as Imagine and later Image and Alpha models, were made in China. Check the label before calling an older PSB "made in Canada"; spec sheets from the 1990s list only the Pickering address.

Amplifier load. The Stratus Gold and Gold i have a 4-ohm nominal impedance, and owners say Stratus models want an amplifier with plenty of current.

Image tweeters. On Image series speakers, check that every tweeter works and sounds as bright as its partner. A dim or dead tweeter is a frequent point of failure on that line. We sell a new Peerless 1" replacement tweeter that drops straight in (Image 1B, 2B, 4T, 5T, 8C, 10S and more) and is more robust than the original, and we can install it while you wait.

Drivers. Owners report occasional woofer failures on older towers. Listen to each driver on its own.

Surrounds. Many PSB woofers, such as the Platinum T8's, use rubber surrounds rather than foam, but press gently on any woofer surround to check it.

Everything we list is inspected, tested and serviced as required here, and comes with our warranty.