4BSST² Dual-Channel (Stereo) Amplifier

The Bryston 4BSST² is a dual channel (stereo) amplifier which is acclaimed internationally as being suited for the finest and most sophisticated sound systems. It is currently our most popular SST² model.

Power Capabilities:
  • 300W into 8 Ohms (500W into 4 Ohms)
  • 900W into 8 Ohms (Bridged Mono)


  • Balanced and unbalanced inputs
  • Selectable gain at 23 or 29dB
  • No fans or other moving parts
  • Convection cooled and housed in a fully aluminum chassis
  • Bridging switch configures amplifier into a single 900W Channel
  • Available with silver or black faceplate (3U + .55”)
  • 17” (without handles) or 19” (with handles) faceplate available (non-rack mountable)
  • Rack mountable Pro Edition available in black (see SST² Pro for more details)

Analog/Speaker Warranty

Unprecedented. Unequalled.

Latest News
08/28 - Sneak a peek at the new phono products coming soon (read more)

08/19 - Congratulations to BusiSoft AV, Quick Start Award Winner! (more)

08/18 - Congratulations to Audio Emporium in Wisconsin! (more)