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Okay, dumb question time. Many receivers have 5.1 inputs for use with external decoders and/or future upgrades. Are these typically just straight pass-through to the amps, or do they go through a volume control stage? I would guess simply pass-through since 5/6 deck pots are more expensive than doing volume digitally in these units, but thought I'd check. (my potential interest is in playing around with some multi-channel dsp experiments, and some of these cheap receivers would provide a convenient 4/5 channel amp for this purpose. If I have to make an external volume control anyway, though, it's not worth the trouble.)
Follow Ups:
There are no dumb questions, just the ones that aren't (and should have been) asked. Anyway, most 5.1 channel inputs on receivers go to the volume control. How many amps have volume controls? Not too many. There are also a few 5.1 processors (not receivers) that have a through-put and allow the analog signal to just "pass through" unchanged. However, it's understood that the output from the through-put will go to some sort of volume control. Hope this helps.
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