The Bryston 4B³ 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.
300W into 8Ω
500W into 4Ω
900W into 8Ω (Bridged Mono)
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 Channel
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 Gain: 23dB or 29dB
Available with silver or black faceplate (3U + .55”)
17” (without handles) or 19” (with handles) faceplate available (non-rack mountable)
Rack mountable Pro Edition available in black (see Cubed Pro for more details)
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