TL;dr - will a Stereo to Mono RCA adapter tolerate the same channel from two different sources (Left from Device 1, Left from Device 2)?
I have a bit of a weird use case that I am looking to create an elegant solution for. I think I have found it bit I don't know enough about the tech to understand if it will work or potentially damage equipment.
I have two sources of audio that output via L/R RCA into L/R RCA. I have one output device. I'm not looking to introduce a mixer, ideally
I want to play audio from both sources, through the one output.
Gear is as follows:
Source 1 (S1): Audio Interface
Source 2 (S2): DAC (audio from PC)
Receiver (R): Headphone Amp that outputs to headphones (duh).
For the purposes of my question, channels will be referred to as gear prefix followed by L/R channel, so Left out of the Interface would be S1.L and right channel input of the receiver would R.R
Here's what I am thinking:
S1.L\ >--S to M cable- R.L\ S2.L/ \ > Headphones S1.R\ / >--S to M cable- R.R/ S2.R/
Will this even work? Will a stereo to mono accept a Left in Left AND Left in Right, and then play both in LEFT provided the mono end is connected to the Left input?