Похоже, что ограничение в 8 каналов для Винды заложено производителем драйвера...
Вот кусок файла
x18_audio.in:
;******************************************************************************
; Device settings for BEHRINGER X-AIR
;------------------------------------------------------------------------------
[_AddReg_0]
HKR,"","InterfaceGUID",%REG_SZ%,"{219383dd-b8fc-4a48-883d-b8f61f2ddac5}"
HKR,"Config\SoundDeviceProfiles\plb\sd1","DisplayName",%REG_SZ%,"OUT 1-2"
HKR,"Config\SoundDeviceProfiles\plb\sd1\Loc_00","ChannelIndex",%REG_DWORD%,0
HKR,"Config\SoundDeviceProfiles\plb\sd1\Loc_01","ChannelIndex",%REG_DWORD%,1
HKR,"Config\SoundDeviceProfiles\plb\sd1","PinCategoryGuid",%REG_SZ%,%GUID_Line%
HKR,"Config\SoundDeviceProfiles\plb\sd1","PinNameGuid",%REG_SZ%,"{66894201-45b6-4b2e-a882-08529c18bf8c}"
HKR,"Config\SoundDeviceProfiles\plb\sd1","Type",%REG_DWORD%,0
HKR,"Config\SoundDeviceProfiles\plb\sd2","DisplayName",%REG_SZ%,"OUT 3-4"
HKR,"Config\SoundDeviceProfiles\plb\sd2\Loc_00","ChannelIndex",%REG_DWORD%,2
HKR,"Config\SoundDeviceProfiles\plb\sd2\Loc_01","ChannelIndex",%REG_DWORD%,3
HKR,"Config\SoundDeviceProfiles\plb\sd2","PinCategoryGuid",%REG_SZ%,%GUID_Line%
HKR,"Config\SoundDeviceProfiles\plb\sd2","PinNameGuid",%REG_SZ%,"{66894202-45b6-4b2e-a882-08529c18bf8c}"
HKR,"Config\SoundDeviceProfiles\plb\sd2","Type",%REG_DWORD%,0
HKR,"Config\SoundDeviceProfiles\plb\sd3","DisplayName",%REG_SZ%,"OUT 5-6"
HKR,"Config\SoundDeviceProfiles\plb\sd3\Loc_00","ChannelIndex",%REG_DWORD%,4
HKR,"Config\SoundDeviceProfiles\plb\sd3\Loc_01","ChannelIndex",%REG_DWORD%,5
HKR,"Config\SoundDeviceProfiles\plb\sd3","PinCategoryGuid",%REG_SZ%,%GUID_Line%
HKR,"Config\SoundDeviceProfiles\plb\sd3","PinNameGuid",%REG_SZ%,"{66894203-45b6-4b2e-a882-08529c18bf8c}"
HKR,"Config\SoundDeviceProfiles\plb\sd3","Type",%REG_DWORD%,0
HKR,"Config\SoundDeviceProfiles\plb\sd4","DisplayName",%REG_SZ%,"OUT 7-8"
HKR,"Config\SoundDeviceProfiles\plb\sd4\Loc_00","ChannelIndex",%REG_DWORD%,6
HKR,"Config\SoundDeviceProfiles\plb\sd4\Loc_01","ChannelIndex",%REG_DWORD%,7
HKR,"Config\SoundDeviceProfiles\plb\sd4","PinCategoryGuid",%REG_SZ%,%GUID_Line%
HKR,"Config\SoundDeviceProfiles\plb\sd4","PinNameGuid",%REG_SZ%,"{66894204-45b6-4b2e-a882-08529c18bf8c}"
HKR,"Config\SoundDeviceProfiles\plb\sd4","Type",%REG_DWORD%,0
HKR,"Config\SoundDeviceProfiles\plb\sd5","DisplayName",%REG_SZ%,"OUT 1-8"
HKR,"Config\SoundDeviceProfiles\plb\sd5\Loc_00","ChannelIndex",%REG_DWORD%,0
HKR,"Config\SoundDeviceProfiles\plb\sd5\Loc_01","ChannelIndex",%REG_DWORD%,1
HKR,"Config\SoundDeviceProfiles\plb\sd5\Loc_02","ChannelIndex",%REG_DWORD%,2
HKR,"Config\SoundDeviceProfiles\plb\sd5\Loc_03","ChannelIndex",%REG_DWORD%,3
HKR,"Config\SoundDeviceProfiles\plb\sd5\Loc_04","ChannelIndex",%REG_DWORD%,4
HKR,"Config\SoundDeviceProfiles\plb\sd5\Loc_05","ChannelIndex",%REG_DWORD%,5
HKR,"Config\SoundDeviceProfiles\plb\sd5\Loc_06","ChannelIndex",%REG_DWORD%,6
HKR,"Config\SoundDeviceProfiles\plb\sd5\Loc_07","ChannelIndex",%REG_DWORD%,7
HKR,"Config\SoundDeviceProfiles\plb\sd5","PinCategoryGuid",%REG_SZ%,%GUID_Line%
HKR,"Config\SoundDeviceProfiles\plb\sd5","PinNameGuid",%REG_SZ%,"{66894205-45b6-4b2e-a882-08529c18bf8c}"
HKR,"Config\SoundDeviceProfiles\plb\sd5","Type",%REG_DWORD%,0
HKR,"Config\SoundDeviceProfiles\rec\sd1","DisplayName",%REG_SZ%,"IN 1-2"
HKR,"Config\SoundDeviceProfiles\rec\sd1\Loc_00","ChannelIndex",%REG_DWORD%,0
HKR,"Config\SoundDeviceProfiles\rec\sd1\Loc_01","ChannelIndex",%REG_DWORD%,1
HKR,"Config\SoundDeviceProfiles\rec\sd1","PinCategoryGuid",%REG_SZ%,%GUID_Line%
HKR,"Config\SoundDeviceProfiles\rec\sd1","PinNameGuid",%REG_SZ%,"{66894206-45b6-4b2e-a882-08529c18bf8c}"
HKR,"Config\SoundDeviceProfiles\rec\sd1","Type",%REG_DWORD%,0
HKR,"Config\SoundDeviceProfiles\rec\sd2","DisplayName",%REG_SZ%,"IN 3-4"
HKR,"Config\SoundDeviceProfiles\rec\sd2\Loc_00","ChannelIndex",%REG_DWORD%,2
HKR,"Config\SoundDeviceProfiles\rec\sd2\Loc_01","ChannelIndex",%REG_DWORD%,3
HKR,"Config\SoundDeviceProfiles\rec\sd2","PinCategoryGuid",%REG_SZ%,%GUID_Line%
HKR,"Config\SoundDeviceProfiles\rec\sd2","PinNameGuid",%REG_SZ%,"{66894207-45b6-4b2e-a882-08529c18bf8c}"
HKR,"Config\SoundDeviceProfiles\rec\sd2","Type",%REG_DWORD%,0
HKR,"Config\SoundDeviceProfiles\rec\sd3","DisplayName",%REG_SZ%,"IN 5-6"
HKR,"Config\SoundDeviceProfiles\rec\sd3\Loc_00","ChannelIndex",%REG_DWORD%,4
HKR,"Config\SoundDeviceProfiles\rec\sd3\Loc_01","ChannelIndex",%REG_DWORD%,5
HKR,"Config\SoundDeviceProfiles\rec\sd3","PinCategoryGuid",%REG_SZ%,%GUID_Line%
HKR,"Config\SoundDeviceProfiles\rec\sd3","PinNameGuid",%REG_SZ%,"{66894208-45b6-4b2e-a882-08529c18bf8c}"
HKR,"Config\SoundDeviceProfiles\rec\sd3","Type",%REG_DWORD%,0
HKR,"Config\SoundDeviceProfiles\rec\sd4","DisplayName",%REG_SZ%,"IN 7-8"
HKR,"Config\SoundDeviceProfiles\rec\sd4\Loc_00","ChannelIndex",%REG_DWORD%,6
HKR,"Config\SoundDeviceProfiles\rec\sd4\Loc_01","ChannelIndex",%REG_DWORD%,7
HKR,"Config\SoundDeviceProfiles\rec\sd4","PinCategoryGuid",%REG_SZ%,%GUID_Line%
HKR,"Config\SoundDeviceProfiles\rec\sd4","PinNameGuid",%REG_SZ%,"{66894209-45b6-4b2e-a882-08529c18bf8c}"
HKR,"Config\SoundDeviceProfiles\rec\sd4","Type",%REG_DWORD%,0
HKR,"Config\SoundDeviceProfiles\rec\sd5","DisplayName",%REG_SZ%,"IN 1-8"
HKR,"Config\SoundDeviceProfiles\rec\sd5\Loc_00","ChannelIndex",%REG_DWORD%,0
HKR,"Config\SoundDeviceProfiles\rec\sd5\Loc_01","ChannelIndex",%REG_DWORD%,1
HKR,"Config\SoundDeviceProfiles\rec\sd5\Loc_02","ChannelIndex",%REG_DWORD%,2
HKR,"Config\SoundDeviceProfiles\rec\sd5\Loc_03","ChannelIndex",%REG_DWORD%,3
HKR,"Config\SoundDeviceProfiles\rec\sd5\Loc_04","ChannelIndex",%REG_DWORD%,4
HKR,"Config\SoundDeviceProfiles\rec\sd5\Loc_05","ChannelIndex",%REG_DWORD%,5
HKR,"Config\SoundDeviceProfiles\rec\sd5\Loc_06","ChannelIndex",%REG_DWORD%,6
HKR,"Config\SoundDeviceProfiles\rec\sd5\Loc_07","ChannelIndex",%REG_DWORD%,7
HKR,"Config\SoundDeviceProfiles\rec\sd5","PinCategoryGuid",%REG_SZ%,%GUID_Line%
HKR,"Config\SoundDeviceProfiles\rec\sd5","PinNameGuid",%REG_SZ%,"{6689420a-45b6-4b2e-a882-08529c18bf8c}"
HKR,"Config\SoundDeviceProfiles\rec\sd5","Type",%REG_DWORD%,0
HKR,"Config\StreamFormatIn_01","DefaultSoundDeviceProfile",%REG_SZ%,"rec"
HKR,"Config\StreamFormatOut_01","DefaultSoundDeviceProfile",%REG_SZ%,"plb"
;******************************************************************************
; Custom names registration
;------------------------------------------------------------------------------
[_AddReg_MediaCategories]
HKLM,"%MEDIA_CATEGORIES%\{66894201-45b6-4b2e-a882-08529c18bf8c}","Name",%REG_SZ%,"OUT 1-2"
HKLM,"%MEDIA_CATEGORIES%\{66894201-45b6-4b2e-a882-08529c18bf8c}","Display",%REG_BINARY%,00,00,00,00
HKLM,"%MEDIA_CATEGORIES%\{66894202-45b6-4b2e-a882-08529c18bf8c}","Name",%REG_SZ%,"OUT 3-4"
HKLM,"%MEDIA_CATEGORIES%\{66894202-45b6-4b2e-a882-08529c18bf8c}","Display",%REG_BINARY%,00,00,00,00
HKLM,"%MEDIA_CATEGORIES%\{66894203-45b6-4b2e-a882-08529c18bf8c}","Name",%REG_SZ%,"OUT 5-6"
HKLM,"%MEDIA_CATEGORIES%\{66894203-45b6-4b2e-a882-08529c18bf8c}","Display",%REG_BINARY%,00,00,00,00
HKLM,"%MEDIA_CATEGORIES%\{66894204-45b6-4b2e-a882-08529c18bf8c}","Name",%REG_SZ%,"OUT 7-8"
HKLM,"%MEDIA_CATEGORIES%\{66894204-45b6-4b2e-a882-08529c18bf8c}","Display",%REG_BINARY%,00,00,00,00
HKLM,"%MEDIA_CATEGORIES%\{66894205-45b6-4b2e-a882-08529c18bf8c}","Name",%REG_SZ%,"OUT 1-8"
HKLM,"%MEDIA_CATEGORIES%\{66894205-45b6-4b2e-a882-08529c18bf8c}","Display",%REG_BINARY%,00,00,00,00
HKLM,"%MEDIA_CATEGORIES%\{66894206-45b6-4b2e-a882-08529c18bf8c}","Name",%REG_SZ%,"IN 1-2"
HKLM,"%MEDIA_CATEGORIES%\{66894206-45b6-4b2e-a882-08529c18bf8c}","Display",%REG_BINARY%,00,00,00,00
HKLM,"%MEDIA_CATEGORIES%\{66894207-45b6-4b2e-a882-08529c18bf8c}","Name",%REG_SZ%,"IN 3-4"
HKLM,"%MEDIA_CATEGORIES%\{66894207-45b6-4b2e-a882-08529c18bf8c}","Display",%REG_BINARY%,00,00,00,00
HKLM,"%MEDIA_CATEGORIES%\{66894208-45b6-4b2e-a882-08529c18bf8c}","Name",%REG_SZ%,"IN 5-6"
HKLM,"%MEDIA_CATEGORIES%\{66894208-45b6-4b2e-a882-08529c18bf8c}","Display",%REG_BINARY%,00,00,00,00
HKLM,"%MEDIA_CATEGORIES%\{66894209-45b6-4b2e-a882-08529c18bf8c}","Name",%REG_SZ%,"IN 7-8"
HKLM,"%MEDIA_CATEGORIES%\{66894209-45b6-4b2e-a882-08529c18bf8c}","Display",%REG_BINARY%,00,00,00,00
HKLM,"%MEDIA_CATEGORIES%\{6689420a-45b6-4b2e-a882-08529c18bf8c}","Name",%REG_SZ%,"IN 1-8"
HKLM,"%MEDIA_CATEGORIES%\{6689420a-45b6-4b2e-a882-08529c18bf8c}","Display",%REG_BINARY%,00,00,00,00
А вот кусок реестра Винды:
Настройки USB-девайса в реестре ВИнды.JPG 52,51 Кб
10 раз скачано
Который, по сути, повторяет вышеприведённый inf-файл. Печально...