The 2254C is a clone of the Neve 2254 compressor with the addition of the Neve 33609 sidechain.  Igor, the creator, offers PCBs on his White Market store.

Notable Features:

• One channel fits in a 1RU case
• Two channels can be linked in stereo
• Five channels can be linked in surround
• Accepts Carnhill, OEP, Lundahl, and Sowter transformers
• Sidechain high-pass filter can be set from 40 to 320hz
• Accepts Sifam meters

Price: $80 for PCB

• $12 for power supply PSU

More information at Igor’s store