Rotel Amplifier D-Sub Serial DB25 Cable Surround RMB-1075 | RMB-1095 Mogami Loom

⦿ Mogami Multicore Part No.2935 used for studios & consoles looms. ⦿ Mogami Made in Japan. What is the DB25 Input on the back panel of the RMB-1075 and RMB-1095 used for?. Left Surround +. Right Surround +.

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