Bryston 4B3 (Front)
Bryston 4B3 (Side)
Bryston 4B3 (Back)
Bryston 4B3 (Front)
Bryston 4B3 (Side)
Bryston 4B3 (Back)
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Bryston 4B³ Amplifier

Stereo Audio Amplifier

Stereo amplifier with brand new Quad-complementary topology designed to provide low distortion, accuracy and transparency.

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CAP2: 0 £7,999.00 £6,665.83 ex VAT

AVAILABLE TO ORDER

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WHY CHOOSE TO BUY FROM KMR AUDIO?

  • 22+ Years Industry Experience
  • Rated “Excellent” By Our Customers
  • Lifetime Tech Support, Always Free
  • Easy 14 Day Returns

The Bryston 4B3 is a stereo amplifier with brand new Quad-complementary topology designed to provide low distortion, accuracy and transparency.


The Bryston 4B3 boasts twelve active devices mounted in a groundbreaking array, matching the amplifier to any preamp and providing the first 6dB of gain. The input stage has been designed to offer supreme transparency with distortion figures as low as 0.0001% distortion.


The Quad-complementary topology removes any aggressive higher harmonic distortion and provides a harmonic response similar to Class A designs with far lower distortion. Each channel includes its own fully independent power supply with separate transformer.


Like all Bryston products, the 4B3 comes with a 20-year warranty and is built with a no-compromised approach.


Bryston 4B3 Main 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 full aluminium chassis.
  • No fans or other moving parts
  • Bridging switch configures amplifier into a single 900W Channel
  • 20-year warranty
    • Innovative Quad-complementary topology for minimal distortion and high transparency.
    • Array of twelve active devices for optimal preamp compatibility.
    • Ultra-low distortion rate of 0.0001% for supreme transparency.
    • Harmonic response similar to Class A designs, but with lower distortion.
    • Independent power supply for each channel with a separate transformer.
    • 20-year warranty, underscoring commitment to quality and durability.
    • Built with a no-compromise approach for top-tier audio performance.
    DPD UPS
    • UK over £99 FREE
    • UK under £99 £10
    • EU £36
    • Rest of World £80

    Large/Heavy items: Extra charges may apply (e.g., consoles, large monitors). We’ll contact you before processing if so.

    We ship with DPD and UPS across the UK, EU and worldwide. Same-day within the M25 is available depending on stock.

    This item, like everything we supply, comes with the complete support of our expert team. Our excellent technicians have been specifying, building and supporting studios for over twenty years. If you have any problems with installation, setup or everyday use, they’re never more than a click away, and always happy to help.

    You can contact them here.

    Bryston 4B³ Amplifier

    Bryston 4B³ Amplifier

    AVAILABLE TO ORDER

    KEY BENEFITS

    Unparalleled Sound Clarity

    The Bryston 4B3 amplifier features an innovative Quad-complementary topology, ensuring extremely low distortion and high fidelity, ideal for audio purists seeking the clearest sound.

    Robust Power Management

    Each channel of the Bryston 4B3 is powered by its own independent supply with a separate transformer, enhancing channel isolation and delivering consistent, reliable audio performance.

    Durable and Reliable Design

    Built to last, the Bryston 4B3 is encased in a full aluminum chassis, convection cooled without fans, and comes with a comprehensive 20-year warranty, ensuring decades of quality performance.