Bryston 7B SST2 monoblock amps

Are Bryston 7B SST2 monoblock amps compatible with the Polk L800 speakers?


  • It would depend upon the amplifier's output circuit topography, in order for the SDA technology to work properly the left channel ground and the right channel ground need to be connected to each other. If the amplifiers are a balanced output design this means that there is voltage present at both the positive and negative speaker terminals and the left and right negatives cannot be connected together. If, on the other hand, there is no voltage present on the left and right amplifier's negative speaker terminals then a ground connection can be made between them.
    Bryston should be able to answer this for you.
  • Would you happen to know if Parasound JC-1 monoblocks are compatible with SDA?
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    You can certainly see all of those paralleled output transistors and their power supply feed on the right hand section of the drawing, each rail has its fuse. Each transistor's output is fed through emitter resistors and all connected together. It doesn't appear to be a balanced output, but I would still recommend contacting Parasound and confirming that to be sure.
  • Thank you so much for the feedback. Here's what I found on the Bryston 7B SST2 monoblocks:

    The 7B SST2 single-channel amplifier employs a balanced-output design that reduces THD and IMD to unprecedented low values (typically 0.001% or less).

    With a low noise floor (typically below -118dB) and excellent signal tracking characteristics (slew rate of 120 Volts per microsecond), the 7B SST2 monoblock assures a new degree of transparency, musicality, and ease of listening.

    We invite you to experience the Bryston SST2 Series amplifiers

    20 Year Warranty -A Generation of Music


    New cosmetics
    New Push on/off power switch
    600 watts at 8 ohms,
    900 watts at 4 ohms
    New SST 2 output devices
    Increased power supply capacitance
    - 30,000 MFD per channel
    Selectable Balanced or Unbalanced inputs
    Lower noise and distortion
    New Independent ultra-low-noise power transformer
    New computer modeled heat-sink design
    Quick connect remote 12 volt trigger
    Selectable gain - 1 Volt or 2 Volt
    Available in Silver or black finish with 19 or 17 inch faceplate
    20 Year Warranty
  • audioluvr
    audioluvr Posts: 4,646
    Are Bryston 7B SST2 monoblock amps compatible with the Polk L800 speakers?

    Gustard X26 Pro DAC
    Belles 21A Pre modded with Mundorf Supreme caps
    B&K M200 Sonata monoblocks refreshed and upgraded
    Belles 350A Reference modded with Mundorf Supreme caps
    Polk SDA 1C's modded / 1000Va Dreadnaught
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    Harman Kardon T65C w/Grado Gold. (Don't laugh. It sounds great!)

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