FCS Pico 504 Re Amp Interface 500 Series ReAmp Foote Control Systems Triad A67j

Burgin McDaniel Komit 500 Series Compressor (price for 1 single unit)

Aphex J PRE 500 Jensen Transformer-Coupled Mic Preamp 500 Series Module

Trident Audio Developments 80B 500 Series EQ

Joemeek meQ500 500 Series 4-Band Equalizer EQ Module SN 00010048 Joe Meek

Trident 80B EQ 500 Series Equalizer Module

Empress Effects ECM-519 500 Series compressors (6 total)

dbx 580 Mic Preamp - 500 Series