AC Sound PI3141 PWM PYE Compressor

Projects > AC Sound PI3141 PWM PYE Compressor

Pulse width modulation (PWM) is a rarely employed gain-reduction technique by which signals above the threshold are “chopped” using a high-frequency pulse. AC Sound’s PI3141 is a reproduction of a classic PYE compressor that utilized this technology.
diy pye compressor
Notable Features:

  • Decay, limit (threshold), and ratio controls
  • Class A operation
  • Transformer balanced
  • Stereo linking capability

Price: $55 for PCB
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