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Bryston 2.5B SST3 Pro

Stereo Power Amplifier

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  • 2.5BSST2 PRO (Front)
  • 2.5BSST2 PRO (Rear)
£3,950.00 (inc VAT) £3,291.67 (exc VAT)
Usually Ships in 48 Hours
20 Years
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Finance available on orders over £300

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The Bryston 2.5BSST² is a compact, high quality, dual-channel (stereo) amplifier intended for use in home sound systems requiring a musically accurate, extremely reliable, no compromise power source.

Power Capabilities

135W into 8Ω (180W into 4Ω)
360W into 8Ω (Bridged Mono)


  • Balanced and unbalanced inputs
  • Selectable gain at 23dB or 29dB
  • Variable attenuator from 0dB to -14dB
  • No fans or other moving parts
  • Regulated power supplies to all voltage gain stages
  • Independent power supplies for each channel
  • Convection cooled and housed in a fully aluminum chassis
  • Bridging switch configures amplifier into a single 360W Channel


  • Harmonic Distortion: < .005% from 20Hz - 20kHz at 135W
  • IM Distortion: < .005% from 10mW - 135W
  • Noise: 108dB below full output
  • Slewing Rate: < 60V/µS
  • Power Bandwidth: .5Hz - > 100kHz
  • Damping Factor: > 500 at 20Hz (8Ω)
  • Sensitivity & Impedance: 1V in = 100W 50k
  • 19" black rack mountable faceplate (2U)

SKU: 2.5sst3-pro

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