I was surprised to be hit by exactly the same issue today after not having used my dwarf for a while and plugged my phone’s TRRS headphones into it (I’ve done that many time before without any issue so it might not be the culprit), but also changed and then reverted a few options in the advanced menu and enabled and then disabled the experimental usb audio gadget.
The problem is that headphone audio seems to be the subtraction of output 1 and 2 duplicated on the two channels. So if I have the same signal in both outputs, I have exactly nothing. Wiring from input 1 to both outputs is totally silent.
A single wire connected to either output 1 or 2 while the other is not connected to anything gives me audio on both sides of my headphones.
If I insert a mono volume control before each output, I can hear something if they don’t have the same gain.
Current install is 1.13.5.3315
I have tried another set of headphones (my TRS in-ears) and the problem is the same. I have the issue only with the headphone output, not the 6.35 one. I have tried to play with the setting that copies the mono-output buffer to unused channel.l without success.
Now something even weirder: if I plug a stereo 3.5 cable into my dwarf’s headphones output, then its other end into a splitter, then my headphones into one of the two output of the splitter, and connect the splitter’s other output into the aux input of my small NUX Air Amp while this one is connected via usb to the same PC as the dwarf, the problem disappears… And this is true even if the NUX is turned off !
As soon as I disconnect the NUX from the PC, the problem reappears…
So it looks definitely like some hardware grounding issue of some sort…
Ok, so further investigation seems to confirm this.
I get normal audio in my headphones if I ground the headphones by using a splitter and touch the jack plug of my guitar cable with the sleeve ring of small 3.5 cable plugged in the splitter.
Hi @jon ! Would you be able to give me some instruction about how I could possibly repair this issue if that is caused by the headphone socket having it’s ground connection broken a I suspect it, please? Could it be as simple as resoldering it properly?
