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Discussion Starter #1 (Edited)
Selectable multi out preamp?

I am looking for some sort of preamp that instead of having multiple inputs, it has multiple selectable outputs. Basically I have my USB DAC on my PC and would like it to play to either my headphone amp or speaker amp. Such a thing exists? Doesn't matter if it has multiple inputs, the main thing is multiple selectable preouts.
 

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You need a passive A/B switch. When they are passive (no AC power cord or active electronics which may add hum, hiss, distortion, etc.) they are bi-directional so you can think of it as two ins and one out, or the way you'll use it, one in (your USB DAC on your PC) and two outs (your headphone amp or, when you hit the switch, your speaker amp) .


For reasons that are not worth going into, you'll often find that units like the one I am suggesting often have extra features you don't need (it switches composite video too) yet they cost less than the ones that do exactly what you requested:

https://www.amazon.com/Panlong-Swit...470890603&sr=1-2&keywords=rca+selector+switch


here's a clone for a little less:
https://www.amazon.com/Port-Video-A..._SR160,160_&psc=1&refRID=4VP3RCM1RD9R2BERGCJH


What makes these nicer than some cheaper ones is the metal box.
 
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