AI-generated approximation — not official manufacturer imagery.
AmplifiersPower Amplifiers
Estimated price (community-sourced)
$4,600 - $7,495
About the 4B3
The Bryston 4B3 is a dual-mono solid-state amplifier featuring two stacked toroidal transformers and an 80,000μF capacitor bank. It delivers 300Wpc into 8Ω (500Wpc into 4Ω) with ≤0.005% THD+N, and can be bridged for 900W mono operation. The design includes switchable gain (23dB/29dB) and Bryston's proprietary Quad Complementary output stage for class-A-like linearity with class-AB efficiency.
Specifications
Key Specifications
Power: 300W
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