DBX 266XL COMPRESSOR/GATE PRO-AUDIO 1U RACK UNIT - 1 channel works

DBX PB-48 48-point Patch Bay

DBX Recording Technology Series Model 224 Type II Tape Noise Reduction System

P6 DBX 200 Route Selector Recording Technology Series

DBX 400X Active Program Route Selector

DBX Model 222 Type II Tape Noise Reduction System Recording Technology Series

DBX 200 Recording Technology Series Program Route Selector

DBX Recording Technology Series Model 222