Stunning PSB Stratus Mini Bookshelf speakers in Black Ash

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.

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.”

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.

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