Bryston B135³ Integrated Amplifier

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  • Important Note: The above images feature the B135 SST², new B135³ images coming soon

    The Bryston B135³ Integrated Amplifier is without question one of the most sonically transparent and reliable audio products available. It offers performance levels equal to the finest separate audio components.


    As a result of relentless passion for superb performance and unparalleled build quality, Bryston engineers have continued to innovate since 1976. The Cubed Series amplifiers continue this tradition of excellence, highlighted by lower distortion, increased bandwidth and reduced noise, presenting listeners with a crystal clear window into their most favorite recordings.

    Bryston Cubed Series Amplifiers, featuring patented circuitry move the listener ever so close to the music with such visceral realism, the experience is most comparable to live performance.


    Bryston engineers have been busy over the years  finding new methods to reduce noise and distortion to reveal more nuance and subtlety than ever before. Cubed Series amplifiers employ significant improvements including:

    • Dramatically less distortion at input stage
    • Improved common mode noise rejection
    • Major improvement in EMI/RFI noise rejection
    • Less than 500mW standby power consumption
    • Update dress panel aesthetic with clean lines and new finish.
    • Extreme Clarity and Detail

    At Bryston, finding ways to eliminate distortion from our designs is a way of life. All Cubed Series amplifiers feature a new patented input circuit that is precisely optimized and linear. Featuring twelve active devices in a groundbreaking array, this new circuit both matches the amplifier to virtually any preamplifier and provides the first 6dB of gain. The new input stage is so transparent, its measurable distortion is less than 1/1000th of 1 percent!

    Newly designed circuitry in the Cubed Series amplifiers is virtually impervious to noise such as RFI and others induced by external and environmental causes.

    The Quad-Complementary topology improves linearity to a new standard of accuracy while virtually eliminating aggressive higher harmonic distortion byproducts. The overall harmonic distribution of Bryston’s Quad-Complementary output mimics the characteristics of a class-A design but with dramatically lower distortion. Each amplifier channel includes its own fully independent power supply with separate transformer.


    All Bryston products are proven on our test bench for one hundred hours of burn in before shipping. Amplifiers cycle between full power and idle in thirty minute intervals to uncover any anomalies that could be illuminated by thermal stress. Our reputation for reliability is without peer.

    Not only do our amplifiers undergo pass/fail testing, but each must achieve excellence in performance benchmarks as well. With each Cubed Series model, the customer will receive a comprehensive performance certificate detailing the exact specifications of the amplifier.

    To demonstrate our commitment to excellence and performance, every Bryston amplifier is warranted to be free of defects in materials and workmanship for a full twenty years.


    All amplifiers are available in either C-Series or PRO versions. C-Series models are available in black or silver colored dress panels and 17 or 19 inches wide. Nineteen inch wide models include front mounted handles (add 1.6 inches to listed depth).

    PRO models are always black and include rack mountable 19 inch wide dress panels plus front mounted handles (add 1.8 inches to listed depth). PRO models also include individual channel trim pots on the rear panel. 

    • 135W into 8 Ohms (180W into 4 Ohms)
    • Over 30,000 MFD of filter capacitance per channel
    • Three ultra-low-noise power transformers
    • Separate ground paths for Digital and Analog
    • Gold plated switch, contacts, and connectors
    • Pre-out/main in connectors
    • Convection cooled and housed in a fully aluminum chassis
    • RS-232 serial data port for remote control via Crestron, AMX or similar control systems
    • Available with silver or black faceplate
    • 17” or 19” faceplate available (non-rack mountable)
    • Optional internal DAC or internal MM phono (see Accessories in Other Products)
    • BR2 remote control available (see Accessories in Other Products)
    • 6x RCA Single Ended Pairs
    • 2x RCA Single Ended Pairs (Record In, Power Amp In)
    • 2x Optical (TOSLINK)*
    • 2x SPDIF (RCA)*
    • 2x RCA Single Ended Pairs (Record Out, Preamp Out)
    • Speaker Terminals
    • ¼” Headphone Jack
    • Control: RS-232 (DB9)
    • AUX IR
    • 2x 12V Output Triggers

    *Only available with internal DAC, SPDIF replaces RCA single ended pair.

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