The Bryston 9B SST2 is a modular, 5-channel, single-chassis power amplifier delivering 140 Watts per channel into 8 Ohms. The 9B, however, is unique among SST2 amps - although it also employs modular construction in which each channel is selfcontained with audio circuitry, connectors, and an independent power supply, the 9B channel module differs in that it is built on its own removable assembly. This means that not only may any channel be easily swapped in the unlikely event of failure, but also that the 9B may be configured with fewer channels if an application so requires.

Indeed, the 9B SST2 may be ordered in a 3, 4 or 5 channel version. Modular channels are available separately for later expansion.

• Power Output 120 watts per channel into 8 ohms, 200 watts per channel into 4 ohms
  Gain Select and Sensitivity 29dB
  
  1.1Vin = 120W @ 8 Ohms - (1V Position)
  23dB - 2.2Vin = 120W @ 8 Ohms - (2V Position)
  17dB - 4.4Vin = 120W @ 8 Ohms - (4V Position)
  
  Input Impedance 50 Kohms single ended, 20 Kohms balanced
  Distortion < 0.005% 20Hz to 20kHz at 120 watts into 8 ohms,
  IM or THD+noise < 0.007% 20Hz to 20kHz at 200 watts into 4 ohms
  Noise Measured with input shorted - 20Hz to 20kHz.
  
  >110dB below rated output 29dB gain (- 73dBu)
  >113dB below rated output 23dB gain (- 76dBu)
  >116dB below rated output 17dB gain (- 79dBu)
  
  Slew Rate >60 volts per microsecond
  Power Bandwidth <1 Hz to over 100 kHz
  Damping Factor Over 500 at 20 Hz, ref. 8 ohms
  Dimensions
  Rack mount version 48.3 x 13.3 x 48.3cm - 19” x 5.25” x 19“ with handles - mounted rack depth - 43.2cm - 17"
  17” version 43.2 x 13.3 x 44.5cm - 17” x 5.25” x 17.5“
  Weight: approx. 28kg - 62 lbs
  Power Consumption & Heat Load
  
  single channel 120W @ 8 ohms - 242 Watts
  5 channels @ 120W @ 8 ohms - 1397 Watts
  Max. Heat Dissipation 8 ohms - 2720 Btu/Hr.
  single channel 200W @ 4 ohms - 422 Watts
  5 channels @ 200W @ 4 ohms - 2295 Watts
  Max. Heat Dissipation 4 ohms - 4420 Btu/Hr.
  At Idle - 192 Watts