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Bryston 4B 3 Cubed Pro 300 Watt Stereo Power Amplifier

300w stereo power amp, 500w at 4 ohms, 1,000w bridged at 8 ohms

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Bryston Limited
Included with your purchase:
  • Free Tech Support
  • Free Extended Warranty
Our Price: $5,695.00

12-month financing with the Vintage King credit card

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Product Description
Additional Information
  • Product Description

    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.

    Power Capabilities:

    • 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)
  • Additional Information

    Condition New
    Active or Passive Active
    Chassis 19-in Rackmount
    Channels Dual-Channel
    Number of Inputs 2
    Number of Outputs 2
    Amp Wattage 1000w
    Impedance 4 or 8 Ohms
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