Use to validate the Protocol 3000 connection and get the machine number
Set audio level in specific amplifier stage
#AUD-LVL␠stage, channel, volume␍
Get audio level in specific amplifier stage
#AUD-LVL?␠stage, channel␍
~nn@AUD-LVL␠stage, channel, volume␍␊
stage - ‘IN, ’OUT’
channel - input or output number
volume - audio parameter in Kramer units, minus sign precedes negative values.
++ increase current value,
-- decrease current value