I need mono output in order to tune my enclosure prototype. Unfortunately the mono button on my DAC died after I dropped it on the floor
I created a file in /usr/share/alsa.conf.d with different variations around
https://alsa.opensrc.org/Asoundrc#Downm ... eo_to_mono
but no cigar...
This is a RPi3 with the latest version of rune
card 1: Track [Fast Track], device 0: USB Audio [USB Audio]
Subdevice #0: subdevice #0