MPN #3B3PRO    


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Dual-channel (stereo) amplifier designed for a wide range of audio/video systems which call for medium to high amounts of power and long-term reliability

The 3B 3 and 4B 3 are dual mono design audio power amplifiers with two channels capable of 200 watts and 300 watts each respectively intended for use in very high performance professional audio systems. Robust yet beautiful machined aluminum enclosures house our proprietary industry-leading circuit designs resulting in exemplary performance observed both in the listening space and in the laboratory.

C-Series variants are available in your choice of 17 inch or 19 inch wide non-rack mountable aluminum dress panels anodized in clear (silver toned) or black. Nineteen inch wide C-Series amplifiers include front mounted handles. PRO amplifiers feature 19 inch wide rack mountable dress panels with a black anodized front finish and also include individual channel trims located on the rear panel.

Power Capabilities:
  • 200W into 8
  • 300W into 4
  • 400W into 8 (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 400W Channel
  • Harmonic Distortion: < .005% from 20Hz - 20kHz at 200W
  • Noise below full output: -110dB single ended, -113dB balanced
  • Slew Rate: < 60V/┬ÁS
  • Power Bandwidth: .5Hz - > 100kHz
  • Damping Factor: > 500 at 20Hz (8)
  • Gain: Switchable - 23dB or 29dB
  • 5.0
    David Um
    October 25, 2017
    Bravo Bryston!
    I have been a fan of tube amps for awhile, that is until I'very met Bryston 3B3. I have been using Harbeth 7pes3 with Primauna with great result but I thought there was something missing.... it was easy to listen but was lacking some excitement? I was just looking to upgrade the sound a bit and came MDAC+ with improvements overall but still not quite there hence came in 3B3 and the difference was very significantly better. Read more
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