JBL Synthesis SDEC-2500A Digital Equalizer Controller

JBL Synthesis SDP-2 Digital Surround Processor/Controller

Genuine JBL Synthesis SDP-5 Digital Surround Processor / Controller

JBL Synthesis SDP-3 Digital Surround Processor/Controller TESTED

JBL Synthesis SDEC-3000 Processor / BSS Audio BLU-16 DIGITAL ROOM CORRECTION

JBL Synthesis SDP-40 Digital Surround Processor Controller - For Parts or Repair