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Bryston 4B³ Amplifier

$6,695.00

The Bryston 4B³ is a dual channel (stereo) amplifier internationally acclaimed as being suited for the finest and most sophisticated sound systems.

The Bryston 4B³ is a dual channel (stereo) amplifier internationally acclaimed as being suited for the finest and most sophisticated sound systems.

It is Bryston's most popular Cubed Series model winning SoundStage Network's 2017 Products of the Year Award.

"The 4B³ is a control freak in terms of grabbing hold of your speakers’ drivers and maintaining bass control, depth and power." - Edgar Kramar, Audio Esoterica
"These dig right to the heart of the music and result in one of the best all-round power amplifiers I have encountered at this price." - Adam Smith, Hi-Fi News & Record Review

Inputs

  • Inputs: 2x Balanced Inputs (XLR or TRS), 2x Single Ended Inputs (RCA)

Power Capabilities

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

Features

  • 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

Options

  • 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)

Product Reviews

Manuals and Guides
pdf
(Size: 5.1 MB)
2018 Bryston Cubed Series Electronics
pdf
(Size: 3.9 MB)
Bryston 3B³ & 4B³ Amplifiers

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

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