(which is great). I just started using the RCA outputs for a
(also great). The problem is that the DAC switches between the outputs based on whether the headphones are plugged in. This makes sense, but it's annoying. I want to hack it and switch between them manually. Electronics whizzes, check my reasoning.
Assume that I know how to solder (but not super well) and that I took physics with circuits about ten years ago, plus some tinkering.
I'm guessing that there is a mechanical switch like this
inside the headphone jack whose function I want to replace with an external switch.
(I don't want to have both active simultaneously; I just want to be able to switch the outputs manually.
This gallery of images shows five sides of the innards with enclosure removed. The last two images show the continuity with headphones plugged and unplugged as tested with a multimeter.
If it were a single connection that switched, I probably would go ahead and try it. With two, I figure it's better to ask.
Ignoring the difficulty of soldering anything new onto these posts and mounting it on the small enclosure (non-trivial, I realize), it seems like I could control it via a DPST switch? Wire 6-7 on one side of the switch and 1-4 on the other? Am I overlooking something stupid?
Next step would be to plug the USB, headphones, and monitors in and try to jump the terminals to reproduce the function of the theoretical switch, but again, thought I'd play it safe.