{"product_id":"bryston-4b-stereo-power-amplifier","title":"Bryston - 4B³ - Stereo Power Amplifier","description":"\u003cdiv style=\"font-size:14px;\"\u003e\n\n\u003cp\u003e\nThe 4B³ is one of Bryston’s most iconic stereo amplifiers, combining immense control, dynamic authority, and transparency into a design trusted by both audiophiles and recording professionals around the world. Built around Bryston’s Cubed Series platform and patented Salomie input stage circuitry, the 4B³ delivers exceptional clarity and musical realism while maintaining the reliability the brand is famous for.\n\u003c\/p\u003e\n\n\u003cp\u003e\nWhat makes the 4B³ especially compelling is how effortlessly it balances power with refinement. Bass remains tight and controlled, vocals sound open and natural, and complex musical passages stay composed even at demanding listening levels. Its fully balanced architecture and convection-cooled chassis contribute to extremely low noise and long-term operational stability without relying on noisy fans or unnecessary complexity.\n\u003c\/p\u003e\n\n\u003cp\u003e\nWith 300 watts per channel into 8 ohms and up to 500 watts per channel into 4 ohms, the 4B³ has the current delivery and headroom to confidently drive a wide range of high-end loudspeakers while preserving a relaxed and highly engaging presentation.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eAvailable in Silver or Black finishes.\u003c\/strong\u003e\n\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong style=\"color:#f39c12;\"\u003eFEATURES\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul style=\"margin-top:0px;\"\u003e\n\u003cli\u003eReference Stereo Power Amplifier\u003c\/li\u003e\n\u003cli\u003eBryston Cubed Series Technology\u003c\/li\u003e\n\u003cli\u003ePatented Salomie Input Stage Circuitry\u003c\/li\u003e\n\u003cli\u003eBalanced XLR and Single-Ended RCA Inputs\u003c\/li\u003e\n\u003cli\u003eSwitchable Gain Settings (23dB \/ 29dB)\u003c\/li\u003e\n\u003cli\u003eFully Convection Cooled Design\u003c\/li\u003e\n\u003cli\u003eNo Fans or Moving Parts\u003c\/li\u003e\n\u003cli\u003eMachined and Anodized Aluminum Chassis\u003c\/li\u003e\n\u003cli\u003eRegulated Power Supplies for Voltage Gain Stages\u003c\/li\u003e\n\u003cli\u003eSoftStart Microprocessor Controlled Startup Circuit\u003c\/li\u003e\n\u003cli\u003eDC Trigger Input for Automated Power Control\u003c\/li\u003e\n\u003cli\u003eDual Binding Post Pairs\u003c\/li\u003e\n\u003cli\u003eUltra Low Noise and Distortion Design\u003c\/li\u003e\n\u003cli\u003eDesigned and Manufactured in Canada\u003c\/li\u003e\n\u003cli\u003eLegendary 20 Year Bryston Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong style=\"color:#f39c12;\"\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong style=\"color:#000000;\"\u003eAmplifier Type:\u003c\/strong\u003e Stereo Power Amplifier\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong style=\"color:#000000;\"\u003eClass of Operation:\u003c\/strong\u003e Class AB\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong style=\"color:#000000;\"\u003ePower Output:\u003c\/strong\u003e 300W per Channel @ 8Ω \/ 500W per Channel @ 4Ω\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong style=\"color:#000000;\"\u003eTHD + N:\u003c\/strong\u003e \u0026lt;0.005% (20Hz–20kHz @ 300W, 8Ω)\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong style=\"color:#000000;\"\u003eFrequency Response:\u003c\/strong\u003e \u0026lt;1Hz – 100kHz (-3dB)\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong style=\"color:#000000;\"\u003eNoise:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eRCA: -117dB\u003c\/li\u003e\n\u003cli\u003eXLR: -119dB\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong style=\"color:#000000;\"\u003eInput Impedance:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eUnbalanced: 7.5kΩ\u003c\/li\u003e\n\u003cli\u003eBalanced: 5kΩ \/ Leg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong style=\"color:#000000;\"\u003eGain Settings:\u003c\/strong\u003e 23dB \/ 29dB Selectable\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong style=\"color:#000000;\"\u003eSlew Rate:\u003c\/strong\u003e \u0026gt;60V\/µS\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong style=\"color:#000000;\"\u003eDamping Factor:\u003c\/strong\u003e \u0026gt;300 @ 20Hz (8Ω)\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong style=\"color:#000000;\"\u003eInputs:\u003c\/strong\u003e Balanced XLR \/ Single-Ended RCA\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong style=\"color:#000000;\"\u003eSpeaker Outputs:\u003c\/strong\u003e Dual Binding Posts\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong style=\"color:#000000;\"\u003eCooling System:\u003c\/strong\u003e Fully Convection Cooled\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong style=\"color:#000000;\"\u003eStandby Power Consumption:\u003c\/strong\u003e \u0026lt;500mW\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong style=\"color:#000000;\"\u003eDimensions:\u003c\/strong\u003e 17” or 19”W x 5.25”H x 17.25”D\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong style=\"color:#000000;\"\u003eWeight:\u003c\/strong\u003e 55 lbs \/ 25 kg\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong style=\"color:#000000;\"\u003eFaceplate Options:\u003c\/strong\u003e Silver or Black\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong style=\"color:#000000;\"\u003eManufacturing:\u003c\/strong\u003e Designed and Manufactured in Canada\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"Bryston","offers":[{"title":"Silver","offer_id":51686268961056,"sku":null,"price":7695.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":51686268993824,"sku":null,"price":7695.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/3728\/1568\/files\/imgi_44_4B3-Silver-17-Oblique-small.jpg?v=1779370051","url":"https:\/\/salon1audio.com\/products\/bryston-4b-stereo-power-amplifier","provider":"Salon 1 Audio","version":"1.0","type":"link"}