Bryston 3B³ Pro B Stock Amplifier

Special Price $4,495.00 Regular Price $5,495.00
In stock
Limited Stock

Save $1000 on Black B Stock Unit!

Like New, Mint Condition, Auditioned Lightly at a Show

Includes Full, Original Warranty

The Bryston 3B³ PRO is dual-channel (stereo) amplifier designed for a wide range of audio/video systems which call for medium to high amounts of power, but wish to avoid sacrificing sonic accuracy and long-term reliability.

Bryston B Stock items are mint-condition, like-new units auditioned for a few hours by Bryston. They include the full original warranty and are guaranteed to work or we'll replace them.

Returns are not accepted on B Stock items.

Pro models are always black and include rack-mountable, 19-inch-wide dress panels plus front mounted handles. PRO models also include individual channel trim pots on the rear panel.

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


  • Individual channel trim pots
  • Rack mountable 19" black faceplate (3U)
  • Balanced and Single Ended audio inputs
  • Balanced and Single Ended 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

Power Capabilities:

  • 200W into 8Ω
  • 300W into 4Ω
  • 500W into 8Ω (Bridged Mono)


Bryston Magazine Guide
Bryston Magazine

Guides & Advice
by Moon Audio

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


  • Channels: 2
  • Harmonic Distortion: ≤ .005% from 20Hz to 20kHz at 200W
  • Noise: ≤ -112dB @ full bandwidth
  • Slew Rate: >60V/µS
  • Power Bandwidth: <1Hz to >100kHz
  • Damping Factor: >500 at 20Hz (8Ω)
  • Switchable Gain: 23dB or 29dB


  • 6.3" H x 13.3" D x 19" W
  • Weight: 35lbs

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