Bryston 4B³-Cubed 300 watts Stereo Amplifier




  • Active extremely low distortion input buffer
  • Balanced and Single Ended audio 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 Channe


  • 300W into 8?
  • 500W into 4?
  • 900W into 8? (Bridged Mono)
Harmonic Distortion≤.005% from 20Hz to 20kHz at 300W
Noise below full output-110dB single ended, -113dB balanced
Slew Rate>60V/µS
Power Bandwidth.5Hz to >100kHz
Damping Factor>500 at 20Hz (8Ω)
Switchable Gain23dB or 29dB

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Four more than four decades Trutone Electronics has been proudly serving the Greater Toronto Area with the greatest asset any specialty audio video dealership possesses: a well informed, experienced and knowledgeable sales staff. Our location in Mississauga is able to assist you in creating a smart home automation system, distributed audio throughout your home and yard, or dedicated home theatre. Trutone's carefully chosen product lines include surround sound receivers, loudspeakers, televisions, custom remote controls, audio video furniture, room acoustic controls, headphones, bluray players, projectors, and screens.