IR*BiAmp SPM412.Basic commands.No discretes050693BIAMPSPM412 ADVANTAGE2 SWITCHERDEVICE_SEL_1DEVICE_SEL_2 DEVICE_SEL3DEVICE_SEL4_ A_VOL_UP A_VOL_DNA_MUTE B_VOL_UP B_VOL_DN B_MUTE C_VOL_UP C_VOL_DN C_MUTE D_VOL_UP D_VOL_DND_MUTEABCD MASTER_< MASTER_> MASTER_<> MASTER_[] MASTER_0MASTER_VOL_UPMASTER_VOL_DN MASTER_MUTE:i"@VWLTS:i"@VVLTS:i"@VWLTS:i"@VWLTS:i"@VVLTS:i"@VWLTS:i"@VWLTS:i"@UWKTS: i"@VWLTS: i"@UWKTS: i"@VWLTS: i"@VWLTS: i"@VVLTS:i"@UWKTS:i"@VWLTS:i"@VWLTS:i"@VWLTS:i"@VVLTS:i"@UWKTS:i"@VVLTS:i"@UWKTS:i"@VWLTS:i"@UWKTS:i"@VWLTS:i"@VVLTS:i"@VWLTS:i"@UWKTS:i"@UWKTS