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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.

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