#sudo aplay -l #sudo amixer scontrols #player.class mixer = Master #player.class srate = 192000 pcm.!default { type hw card 0 } ctl.!default { type hw card 0 } #player.class mixer = sftvol #player.class srate = 192000 #player.class volmin = 50 #player.class volmax = 100 #player.class voldef = 10 pcm.!default { type plug slave.pcm "myvol" } ctl.!default { type hw card 1 } pcm.myvol { type softvol slave.pcm "plughw:1" control.name "sftvol" control.card 1 }