2023-08-26 monthly 0.9

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Bryston 4B3 Power Amplifier

Article code: V11

Bryston 4B3 Power Amplifier

BRYSTON 4B3 Cubed Power amplifier
2 x 300 Watts at 8 Ohm. 20 years warranty.
In our showroom.

The Bryston 4B³ power amp is a dual channel (stereo) amplifier which is acclaimed internationally as being suited for the finest and most sophisticated sound systems. It is currently our most popular Cubed Series model.
Available in silver, white, black, champagne or gun metal grey finish with 19 or 17 inch faceplate, with green or blue LED's.

Power Capabilities: 
  • 300W into 8Ω 
  • 500W into 4Ω 
  • 900W into 8Ω (Bridged Mono)

  • Active extremely low distortion input buffer 
  • Balanced and unbalanced inputs 
  • Selectable gain at 23 or 29dB 
  • Regulated power supplies to all voltage gain stages 
  • Independent power supplies for each channel 
  • Convection cooled and housed in a fully aluminum chassis. 
  • No fans or other moving parts 
  • Bridging switch configures amplifier into a single 900W Channel

  • Harmonic Distortion: < .005% from 20Hz - 20kHz at 300W 
  • Noise below full output: -110dB single ended, -113dB balanced 
  • Slew Rate: < 60V/µS 
  • Power Bandwidth: .5Hz - > 100kHz 
  • Damping Factor: > 500 at 20Hz (8Ω) 
  • Gain: Switchable - 23dB or 29dB