While I'm sure this particular cable has a different purpose, it does exactly what it says it will do. This is the mono cable used on older Parasound models. The device acts as a trigger to turn on a third party amplifier (or even a newer Parasound device) with a standard 1/8" jack. In my case I am using a cable on a Parasound NewClassic 2100 preamp for another brand of amp. Works like a champ. Not very picky about configuration (mono) but works great in this application.
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