Bryston 4B3

4B3 MSRP $7,495 Contact Us

The 4B3 is Bryston's most popular stereo amplifier and provides accurate and musical audio for speakers requiring more power. Can be bridged for mono operation.

Available with 17" or 19" silver or black faceplates. Rackmount (3U+0.55") option.


  • Active low distortion input buffer
  • Balanced and single-ended inputs
  • Selectable 23dB or 29dB gain
  • Regulated power supplies for all gain stages
  • Independent power supplies for each channel
  • Convection cooled; no fans or moving parts