But its simple, you just need to trace from that relay closer to that 6.5mm female jack (headphones) and volume.
I'm not sure what you mean. I was thinking that I would need to insert a DPDT switch into the circuit to bypass the HP socket and route L & R signals directly to the RCA outputs (regardless of anything being plugged in the socket).
Here is my crude diagram...
I assume that this would involve either breaking traces on the PCB or desoldering some of the pins on the HP socket (which would be preferable to me as it's less destructive).
Is there an easier way to do this?
Btw, a nice addon (not my idea):
https://www.amazon.com/Taiss-Aluminum-Electronic-Potentiometer-Knobs,Switch/dp/B07FVLVB55
Thanks, I know about the knob https://www.audiosciencereview.com/...cal-clear-hd600-around-400.10063/#post-273346