New Product - Prisma SM6 MkII Preamplifier

We designed and built our first pre amplifier in 1977, and since that time we’ve produced no fewer than 20 new models.

Past models included:

  • SP100 - Stereo Preamplifier
  • SP100A - Stereo Preamplifier
  • SP50 - Stereo Preamplifier
  • SP100II - Stereo Preamplifier
  • SP10 - Stereo Preamplifier
  • SP1000 - Stereo Preamplifier
  • MODELII - Stereo Preamplifier
  • SX1 - Stereo Preamplifier
  • SM2 - Stereo Preamplifier
  • SA2 - Stereo Preamplifier
  • SA33 - Stereo Preamplifier
  • SA3 - Stereo Preamplifier
  • SM3 - Stereo Preamplifier
  • EP - Stereo Preamplifier
  • EP2 - Stereo Preamplifier
  • EP3 - Stereo Preamplifier
  • SM4 - Stereo Preamplifier
  • SA35 - Stereo Preamplifier
  • SM5 - Stereo Preamplifier
  • E Series EP - Stereo Preamplifier

The new SM6 MkII Balanced Preamplifier is a heavily revised variant of the venerable SM6 fully balanced Class-A stereo preamplifier. The original SM6 had an impressive reputation to live up to. It already featured fully balanced Class-A circuitry, an impressive list of balanced and unbalanced I/O, IR remote, and dual segment LED display. All things considered, the SM6 was already such an impressive performer; a revision of the platform was the most prudent approach.

The new SM6 MkII features even lower levels of signal to noise ratio, thereby obtaining the very finest levels of detail from your music. Discrete Class-A circuitry is employed extensively throughout the product. The positive and negative audio rails of each channel are kept totally separate, ensuring the highest level of channel separation attainable.

In addition to already impressive base functionality, we took the opportunity of adding the following new features:

  • Blue 2 segment alphanumeric LED display
  • Front panel & remote on/off control of the unit and any 5V remote trigger controlled power amplifier (eg. 350, 750, 6160)
  • Front panel & remote mute functionality
  • Preamplifier bypass circuitry has been added to offer processor loop functionality for easy integration into home theater systems
  • Balance and input selection stored when unit put into standby
  • Custom designed, full-function infrared (IR) remote control machined from solid aluminium
  • Completely rewritten control software

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