JBL Synthesis SDP-3 Digital Surround Processor/Controller TESTED

Genuine JBL Synthesis SDP-5 Digital Surround Processor / Controller

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

Rare JBL Synthesis SP-MKII Surround Processor Preamp

JBL Synthesis SDP-5 Digital Surround Processor

JBL Synthesis SDEC-2500A Digital Equalizer Controller