The Bryston ST Series amplifiers incorporate the use of an innovative gain stage topology which yields a substantially lower noise floor through the use of low-impedance pathways within the amplifier. This same approach also has strong advantages in reducing the overall distortion performance. Bryston’s computer controlled distortion analyzers confirm Inter-modulation Distortion levels less than 10 parts per million (below 0.0009%) are typical for this new circuitry. All ST amplifiers use Bryston’s proprietary Quad-Complementary output section, which improves linearity to a new standard of accuracy, while virtually eliminating aggressive higher harmonic distortion products. From input to output, all the circuitry in the ST series of amps has been optimized for the most accurate performance possible. Custom dual torodial power supplies provide precise and focused soundstaging. The dual power supplies employ multiple filter capacitors per channel, rather than single pairs of larger filter cans. This allows improved high frequency response and reduces overall losses in the supply. Standard features included both balanced and unbalanced gold plated inputs, a ground lift switch to reduce those annoying ground loops and a stereo/mono switch for bridging the outputs if higher power levels are required. 

Amplifiers range in power from the 3B ST stereo unit at 120 watts per channel through the 4B ST stereo amplifier at 250 watts per channel, to the monstrous 7B ST monaural amplifier at 500 watts and the multi-channel 120 watt 8B ST. The 3B ST stereo amplifier at 120 watts per channel provides all the quality and value of our larger amplifiers but in a package which is both compact and powerful. Suitable for a wide range of audio/video systems where sonic accuracy, medium power and long term reliability is required.

The Bryston 4B is something of a legend among audio amplifiers. As our most popular amplifier over the years, it has attained inter-national status as an amplifier suitable for the finest and most sophisticated sound systems. Whatever the venue, be it a recording studio, a sound stage, a broadcast facility, a home theater installation, or a state-of-the-art stereo system, Bryston has continued to be the number one choice.