Technics SH‑AC500D Digital Signal Processor –Dolby Digital / Surround Sound Used

Technics SH-AC500D Digital Signal Processor Dolby - TESTED

Harman Kardon ADP-303 Dolby Digital Decoder With Digital Out Mod

Harman/Kardon AVP2 Digital Servo Surround Processor Unit Black Dolby Pro Logic

Technics SH-AC500D Digital Signal Processor Dolby

Dolby DP563 Surround & Pro Logic II Reference Multi Channel Encoder

Vintage 1980s RCA MSP400 Surround Sound Processor Dolby Pro Logic MADE IN JAPAN!

Harman Kardon ADP-303 Dolby Digital Decoder With Digital Out Mod