.5B

About the .5B

The Bryston Model .5B is a fundamental preamplifier that provides signal routing and switching capabilities for analog audio sources. It features a tape loop for integrating external audio processors like noise reduction units or equalizers, with the ability to include or exclude these devices from the signal path via a dedicated tape switch. The preamplifier includes a low-frequency rumble filter with an inflection point at 31.7Hz and a 6dB/octave slope, effectively reducing subsonic frequencies and turntable-induced rumble by approximately 20dB. The design emphasizes simplicity and sound quality for basic audio systems.