Hello. After some time and last updates I found my music is played nice in one channel only. Other channel is quite silent (but still plays). Some manipulations with a cable, speakers and headphones made me sure that it is a software problem. So, how can I balance both channels (left and right) volume?
Soundcard: Asus Xonar Essence STX (Virtuoso drivers)
Yeah, thank you both. I didn’t found that controls in my Plasma desktop volume applet but they were founded in pavucontrol widget. The both channels were at 65% volume, I deleted the file, restart session and volume goes much louder and nice in both channels.