LAZ 525 DIY Compressor

Projects > LAZ 525 DIY Compressor

The LAZ 525 is a replica of the vintage API 525 compressor for the 51x Alliance format. LAZ’s PCB accepts API-style discreet opamps and a Lundahl 1540 input transformer. It is also designed to minimize wiring: only trafos and pots need to be wired to the PCB.

Notable Features:

  • Lundahl input transformer or differential input circuit
  • Clones all of the features of the original
  • Compress (2:1) and Limit (20:1) ratio settings
  • Two release settings
  • Possible attack-pot mod
  • De-Esser mode
  • Compatible with the 51x Alliance 511 racks.

Price: £155 for partial kit

More info: