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Welcome Licorice Pizza (LP) lovers! Setup guides and Vinyl FAQ.

Melos use analogue optoisolators as volume controls.

The Melos design uses analogue optoisolators as volume controls. An analogue optoisolator works by varying the light output of an emitter which then varies the resistance of a light dependent resistor used as receiver.

For a reason that has always escaped me they choose to use valves as the light source for the optoisolator. The rest of the world uses LEDs.

Mark Kelly


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