Bryston 2.5B Cubed Dual-Mono Power Amplifier

£5,500.00 inc. VAT

Trade-in available.

The Bryston 2.5B Cubed is a superbly nuanced dual-mono power amplifier, and the entry point for the whole Cubed Series range. If you want an amplifier that just gets out of the way, come listen to this.

Available in Silver or Black finish, with either 17-inch or 19-inch width faceplate.



* Usually ships within 1-3 business days. See exceptions

SKU: USV-BRYSTON-25B3 Categories: , ,



For some, it’s a gateway drug. The Bryston 2.5B Cubed Amplifier is the least expensive way to get a Cubed Series amplifier, but it’s far from cheap.

Made with the same materials and loving care in the Bryston factory in Peterborough, Ontario just like every other Bryston product, the 2.5B³ will still surprise you with it’s startling dynamics, crystal clarity and 3D enveloping spaciousness.

You’ve really got to hear one to appreciate what an incredible deal this model is, so come book a demonstration at Unilet Sound & Vision and let us show you what it’s made of.


  • Balanced XLR and Single ended RCA input.
  • 2 Channels each with fully independent power supplies including transformers.
  • 135 W into 8 ohms (and up to 180 W into 4 ohms) per-channel.
  • The patented Salomie circuit, as found in all Cubed Series amplifiers.
  • Switchable gain (23 dB or 29 dB).
  • Fully convection cooled means no noisy fans.
  • Machined and anodised aluminium enclosure and dress panel.
  • Less than 500 mW standby power consumption.
  • SoftStart microprocessor controlled startup sequence won’t trip circuit breakers.
  • DC trigger for automated turn-on and turn-off.
  • Legendary Bryston 20-Year Warranty.


  • Dimensions (Inches): 17 / 19 W x 4.5 H x 14.75 D
  • Weight: 28 lbs / 13 kg
  • Frequency Response: <1 Hz – 100 kHz, -3 dB
  • THD+N (20 Hz – 20 kHz @ Rated Power, 8 Ω): <0.005 %
  • Power Output (per-channel): 135 W @ 8 Ω / 180 W @ 4 Ω
  • Noise: RCA <-106 dB / XLR <-111 dB
  • Input Impedance: Unbalanced 30 kΩ / Balanced 30 kΩ+ / 6 kΩ-


  • Silver or black faceplate.
  • 17-inch or 19-inch faceplate (non-rack mountable) .
  • PRO version includes 19-inch rack mount dress panel in black, plus rear panel channel trim pots (-14 to 0 dB). Please contact us for availability.

Full Bryston Range Available

Unilet Sound & Vision are official retail partners for Bryston, providing sales, advice and assistance on their entire range of high-quality products. Please do get in touch if you would like a demonstration or wish to purchase.

More Information

Additional information

Weight 13 kg
Dimensions 37.46 × 43.18 × 11.43 cm

Black, Silver

Faceplate Size

17-Inch, 19-Inch

Purchase Options

Home Delivery, Click & Collect, Trade-In Available



Bryston is a Canadian company that has been designing and hand crafting state-of-the art electronics for professionals and consumers for over twenty-five years. The company are committed to producing the most accurate and reliable products available, and such is the confidence in their products they still offer a twenty-year warranty on all analogue designs.

PMC has been the proud distributor of Bryston products since 1993, and Bryston's world leading active electronics and amplification feature in PMC’s active loudspeaker systems.

Bryston | Unilet Sound & Vision


There are no reviews yet.

Be the first to review “Bryston 2.5B Cubed Dual-Mono Power Amplifier”

Your email address will not be published. Required fields are marked *

You may also like…