if amixer -q | grep -q "Simple mixer control '$CONTROL'" ; then
amixer -q set "${CONTROL}" unmute 1>/dev/null 2>&1
amixer -q set "${CONTROL}" "${VOL}"%
if amixer -q | grep -q "Simple mixer control '$CONTROL'" ; then
amixer -q set "${CONTROL}" unmute 1>/dev/null 2>&1
amixer -q set "${CONTROL}" "${VOL}"%