Cubilux USB to SPDIF Transmitter and Receiver UCSTR-B3 雑感です．
まず，結論から書くと，
なぜかなかなか入荷されませんが，他に同様の製品ありませんので，見つけたら即捕獲！
しておくのが良いのではないかと思います．
Amazon.co.jp
amzn.to
これはなに？
USB と SPDIF を変換するシンプルなアダプターです．本製品以外にも似たようなことができるものはもちろんあるのですが，
- 入出力両方に対応
- 192KHz/24bit 対応（ステレオのみ．5.1ch や 7.1 ch には対応しない）
- 安価
の条件を全て満たすものとしては本 blog 執筆時点だと他にないと思います．
Amazon.co.jp
amzn.to
メーカーは CUBLUX ですが，同社の製品としては，以前，本 blog で取り上げた USB to SPDIF アダプターの
Cubilux USB to SPDIF Optical Audio Converter 雑感
Cubilux USB to SPDIF Optical Audio Converter 雑感です．Amazon のブランドページは以下の通りです．いつもの通り結論から書くと，所有しているすべての端末で動作確認ができました．超小型で取り回し...
www.labohyt.net
2024.05.07
Bitly
amzn.to
がありますし，逆向きの SPDIF to USB アダプターである
Bitly
amzn.to
もあるので，組み合わせることで本製品と同様のことができそうに見えるのですが，SPDIF から USB への変換は 48KHz/16bit までと微妙に違います．また，上位のオーディオインターフェースだと同様の機能を持つものはそれなりにありますが，当然，それなりのお値段しますので，本製品と比べるようなものではないと思います．
開封の儀
購入はいつものとおり Amazon から，お値段は5000円強でした．パッケージは以下の通り簡素な紙箱でした．
Photo by hyt.
内容物は以下の通り，本体，説明書，USB-A to USB-C のケーブル，USB-A to USB-C 変換アダプターで，残念ながら光デジタルケーブルの付属はありませんが，お値段がお値段なのでこれは仕方のないところでしょう．なお，SPDIF の接続は光ケーブルのみ対応で，同軸タイプには対応していません．
Photo by hyt.
本体は，以下の通り，非常にコンパクト，かつ真っ黒な金属筐体で，高級感とまでは言いませんが，それなりのオーディオ機器の隣にあっても違和感がないと思います．
Photo by hyt.
Photo by hyt.
Photo by hyt.
Photo by hyt.
使用雑感
まず，いまのところ，
全ての周波数・深度で試したわけではありませんが，少なくとも，Windows, MacOS, Linux で使う限りは今のところ問題なく使用可能
でした．もちろん「受信 (TX)」「送信 (RX)」両方で試しています．ただし Amazon には使えなかったというコメントもそれなりにあるので，どのような機器と組み合わせているのかにもよるのかもしれません．
Bitly
amzn.to
以下に，ちょっと長いですが，Linux (Ubuntu 20.04) でのどのように認識されているのかを示しておきます．まず，lsusb の詳細情報は以下の通り．
lsusb -s 1:2 -v
Bus 001 Device 002: ID 262a:9123 SAVITECH Corp. USB SPDIF TX/RX Adapter
Couldn't open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 64
idVendor 0x262a SAVITECH Corp.
idProduct 0x9123
bcdDevice 0.01
iManufacturer 1 SAVIAUDIO
iProduct 2 USB SPDIF TX/RX Adapter
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x0170
bNumInterfaces 4
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.00
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 95
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0020 1x 32 bytes
bInterval 6
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 1
bInterfaceCount 3
bFunctionClass 1 Audio
bFunctionSubClass 0
bFunctionProtocol 32
iFunction 3
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 32
iInterface 3
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 2.00
bCategory 10
wTotalLength 0x0065
bmControls 0x00
AudioControl Interface Descriptor:
bLength 8
bDescriptorType 36
bDescriptorSubtype 10 (CLOCK_SOURCE)
bClockID 1
bmAttributes 7 Internal programmable clock (synchronized to SOF)
bmControls 0x07
Clock Frequency Control (read/write)
Clock Validity Control (read-only)
bAssocTerminal 0
iClockSource 0
AudioControl Interface Descriptor:
bLength 8
bDescriptorType 36
bDescriptorSubtype 10 (CLOCK_SOURCE)
bClockID 2
bmAttributes 7 Internal programmable clock (synchronized to SOF)
bmControls 0x07
Clock Frequency Control (read/write)
Clock Validity Control (read-only)
bAssocTerminal 0
iClockSource 0
AudioControl Interface Descriptor:
bLength 17
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 3
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bCSourceID 1
bNrChannels 2
bmChannelConfig 0x00000003
Front Left (FL)
Front Right (FR)
iChannelNames 0
bmControls 0x0000
iTerminal 0
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 4
wTerminalType 0x0605 SPDIF interface
bAssocTerminal 0
bSourceID 10
bCSourceID 1
bmControls 0x0000
iTerminal 0
AudioControl Interface Descriptor:
bLength 18
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 10
bSourceID 3
bmaControls(0) 0x00000003
Mute Control (read/write)
bmaControls(1) 0x0000000c
Volume Control (read/write)
bmaControls(2) 0x0000000c
Volume Control (read/write)
iFeature 0
AudioControl Interface Descriptor:
bLength 17
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 6
wTerminalType 0x0603 Line Connector
bAssocTerminal 0
bCSourceID 2
bNrChannels 2
bmChannelConfig 0x00000003
Front Left (FL)
Front Right (FR)
iChannelNames 0
bmControls 0x0000
iTerminal 0
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 8
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 6
bCSourceID 2
bmControls 0x0000
iTerminal 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 32
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 1
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 32
iInterface 0
AudioStreaming Interface Descriptor:
bLength 16
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 3
bmControls 0x00
bFormatType 1
bmFormats 0x00000001
PCM
bNrChannels 2
bmChannelConfig 0x00000003
Front Left (FL)
Front Right (FR)
iChannelNames 0
AudioStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bSubslotSize 2
bBitResolution 16
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0068 1x 104 bytes
bInterval 1
AudioStreaming Endpoint Descriptor:
bLength 8
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bmControls 0x00
bLockDelayUnits 2 Decoded PCM samples
wLockDelay 0x0002
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x84 EP 4 IN
bmAttributes 17
Transfer Type Isochronous
Synch Type None
Usage Type Feedback
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 4
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 2
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 32
iInterface 0
AudioStreaming Interface Descriptor:
bLength 16
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 3
bmControls 0x00
bFormatType 1
bmFormats 0x00000001
PCM
bNrChannels 2
bmChannelConfig 0x00000003
Front Left (FL)
Front Right (FR)
iChannelNames 0
AudioStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bSubslotSize 3
bBitResolution 24
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x009c 1x 156 bytes
bInterval 1
AudioStreaming Endpoint Descriptor:
bLength 8
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bmControls 0x00
bLockDelayUnits 2 Decoded PCM samples
wLockDelay 0x0002
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x84 EP 4 IN
bmAttributes 17
Transfer Type Isochronous
Synch Type None
Usage Type Feedback
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 4
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 32
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 32
iInterface 0
AudioStreaming Interface Descriptor:
bLength 16
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 8
bmControls 0x00
bFormatType 1
bmFormats 0x00000001
PCM
bNrChannels 2
bmChannelConfig 0x00000003
Front Left (FL)
Front Right (FR)
iChannelNames 0
AudioStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bSubslotSize 2
bBitResolution 16
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 9
Transfer Type Isochronous
Synch Type Adaptive
Usage Type Data
wMaxPacketSize 0x0068 1x 104 bytes
bInterval 1
AudioStreaming Endpoint Descriptor:
bLength 8
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bmControls 0x00
bLockDelayUnits 2 Decoded PCM samples
wLockDelay 0x0002
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 2
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 32
iInterface 0
AudioStreaming Interface Descriptor:
bLength 16
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 8
bmControls 0x00
bFormatType 1
bmFormats 0x00000001
PCM
bNrChannels 2
bmChannelConfig 0x00000003
Front Left (FL)
Front Right (FR)
iChannelNames 0
AudioStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bSubslotSize 3
bBitResolution 24
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 9
Transfer Type Isochronous
Synch Type Adaptive
Usage Type Data
wMaxPacketSize 0x009c 1x 156 bytes
bInterval 1
AudioStreaming Endpoint Descriptor:
bLength 8
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x00
bmControls 0x00
bLockDelayUnits 2 Decoded PCM samples
wLockDelay 0x0002
次に pactl on pipewire の出力は以下の通りです．標準だと 48KHz/24bit のインターフェースとして認識されているようです．
pactl list sinks
シンク #50
状態: SUSPENDED
名前: alsa_output.usb-SAVIAUDIO_USB_SPDIF_TX_RX_Adapter-01.analog-stereo
説明: USB SPDIF TX/RX Adapter Analog Stereo
ドライバー: PipeWire
サンプル仕様: s24le 2ch 48000Hz
チャンネルマップ: front-left,front-right
所有者モジュール: 4294967295
ミュート: いいえ
ボリューム: front-left: 48287 / 74% / -7.96 dB, front-right: 48287 / 74% / -7.96 dB
バランス 0.00
ベースボリューム: 65536 / 100% / 0.00 dB
モニターソース: alsa_output.usb-SAVIAUDIO_USB_SPDIF_TX_RX_Adapter-01.analog-stereo.monitor
待機時間: 0 usec, configured 0 usec
フラグ: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY
プロパティー:
alsa.card = "1"
alsa.card_name = "USB SPDIF TX/RX Adapter"
alsa.class = "generic"
alsa.components = "USB262a:9123"
alsa.device = "0"
alsa.driver_name = "snd_usb_audio"
alsa.id = "Adapter"
alsa.long_card_name = "SAVIAUDIO USB SPDIF TX/RX Adapter at usb-0000:00:14.0-2, high speed"
alsa.mixer_name = "USB Mixer"
alsa.name = "USB Audio"
alsa.resolution_bits = "16"
alsa.subclass = "generic-mix"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
api.alsa.card.longname = "SAVIAUDIO USB SPDIF TX/RX Adapter at usb-0000:00:14.0-2, high speed"
api.alsa.card.name = "USB SPDIF TX/RX Adapter"
api.alsa.path = "front:1"
api.alsa.pcm.card = "1"
api.alsa.pcm.stream = "playback"
audio.channels = "2"
audio.position = "FL,FR"
card.profile.device = "4"
device.api = "alsa"
device.class = "sound"
device.id = "42"
device.profile.description = "Analog Stereo"
device.profile.name = "analog-stereo"
device.routes = "1"
factory.name = "api.alsa.pcm.sink"
media.class = "Audio/Sink"
device.description = "USB SPDIF TX/RX Adapter"
node.name = "alsa_output.usb-SAVIAUDIO_USB_SPDIF_TX_RX_Adapter-01.analog-stereo"
node.nick = "USB SPDIF TX/RX Adapter"
node.pause-on-idle = "false"
object.path = "alsa:pcm:1:front:1:playback"
priority.driver = "1009"
priority.session = "1009"
factory.id = "18"
clock.quantum-limit = "8192"
client.id = "34"
node.driver = "true"
factory.mode = "merge"
audio.adapt.follower = ""
library.name = "audioconvert/libspa-audioconvert"
object.id = "50"
object.serial = "50"
api.acp.auto-port = "false"
api.acp.auto-profile = "false"
api.alsa.card = "1"
api.alsa.use-acp = "true"
api.dbus.ReserveDevice1 = "Audio1"
device.bus = "usb"
device.bus-id = "usb-SAVIAUDIO_USB_SPDIF_TX_RX_Adapter-01"
device.bus_path = "pci-0000:00:14.0-usb-0:2:1.1"
device.enum.api = "udev"
device.icon_name = "audio-card-analog-usb"
device.name = "alsa_card.usb-SAVIAUDIO_USB_SPDIF_TX_RX_Adapter-01"
device.nick = "USB SPDIF TX/RX Adapter"
device.plugged.usec = "17369991"
device.product.id = "0x9123"
device.product.name = "USB SPDIF TX/RX Adapter"
device.serial = "SAVIAUDIO_USB_SPDIF_TX_RX_Adapter"
device.subsystem = "sound"
sysfs.path = "/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.1/sound/card1"
device.vendor.id = "0x262a"
device.vendor.name = "SAVITECH Corp."
device.string = "1"
ポート:
analog-output: Analog Output (type: Analog, priority: 9900, availability unknown)
活動中ポート: analog-output
形式:
pcm
$ pactl list sources
ソース #50
状態: SUSPENDED
名前: alsa_output.usb-SAVIAUDIO_USB_SPDIF_TX_RX_Adapter-01.analog-stereo.monitor
説明: Monitor of USB SPDIF TX/RX Adapter Analog Stereo
ドライバー: PipeWire
サンプル仕様: s24le 2ch 48000Hz
チャンネルマップ: front-left,front-right
所有者モジュール: 4294967295
ミュート: いいえ
ボリューム: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% / 0.00 dB
バランス 0.00
ベースボリューム: 65536 / 100% / 0.00 dB
シンクのモニター: alsa_output.usb-SAVIAUDIO_USB_SPDIF_TX_RX_Adapter-01.analog-stereo
待機時間: 0 usec, configured 0 usec
フラグ: HARDWARE DECIBEL_VOLUME LATENCY
プロパティー:
alsa.card = "1"
alsa.card_name = "USB SPDIF TX/RX Adapter"
alsa.class = "generic"
alsa.components = "USB262a:9123"
alsa.device = "0"
alsa.driver_name = "snd_usb_audio"
alsa.id = "Adapter"
alsa.long_card_name = "SAVIAUDIO USB SPDIF TX/RX Adapter at usb-0000:00:14.0-2, high speed"
alsa.mixer_name = "USB Mixer"
alsa.name = "USB Audio"
alsa.resolution_bits = "16"
alsa.subclass = "generic-mix"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
api.alsa.card.longname = "SAVIAUDIO USB SPDIF TX/RX Adapter at usb-0000:00:14.0-2, high speed"
api.alsa.card.name = "USB SPDIF TX/RX Adapter"
api.alsa.path = "front:1"
api.alsa.pcm.card = "1"
api.alsa.pcm.stream = "playback"
audio.channels = "2"
audio.position = "FL,FR"
card.profile.device = "4"
device.api = "alsa"
device.class = "monitor"
device.id = "42"
device.profile.description = "Analog Stereo"
device.profile.name = "analog-stereo"
device.routes = "1"
factory.name = "api.alsa.pcm.sink"
media.class = "Audio/Sink"
device.description = "USB SPDIF TX/RX Adapter"
node.name = "alsa_output.usb-SAVIAUDIO_USB_SPDIF_TX_RX_Adapter-01.analog-stereo"
node.nick = "USB SPDIF TX/RX Adapter"
node.pause-on-idle = "false"
object.path = "alsa:pcm:1:front:1:playback"
priority.driver = "1009"
priority.session = "1009"
factory.id = "18"
clock.quantum-limit = "8192"
client.id = "34"
node.driver = "true"
factory.mode = "merge"
audio.adapt.follower = ""
library.name = "audioconvert/libspa-audioconvert"
object.id = "50"
object.serial = "50"
api.acp.auto-port = "false"
api.acp.auto-profile = "false"
api.alsa.card = "1"
api.alsa.use-acp = "true"
api.dbus.ReserveDevice1 = "Audio1"
device.bus = "usb"
device.bus-id = "usb-SAVIAUDIO_USB_SPDIF_TX_RX_Adapter-01"
device.bus_path = "pci-0000:00:14.0-usb-0:2:1.1"
device.enum.api = "udev"
device.icon_name = "audio-card-analog-usb"
device.name = "alsa_card.usb-SAVIAUDIO_USB_SPDIF_TX_RX_Adapter-01"
device.nick = "USB SPDIF TX/RX Adapter"
device.plugged.usec = "17369991"
device.product.id = "0x9123"
device.product.name = "USB SPDIF TX/RX Adapter"
device.serial = "SAVIAUDIO_USB_SPDIF_TX_RX_Adapter"
device.subsystem = "sound"
sysfs.path = "/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.1/sound/card1"
device.vendor.id = "0x262a"
device.vendor.name = "SAVITECH Corp."
device.string = "1"
ポート:
analog-output: Analog Output (type: Analog, priority: 9900, availability unknown)
活動中ポート: analog-output
形式:
pcm
ソース #51
状態: SUSPENDED
名前: alsa_input.usb-SAVIAUDIO_USB_SPDIF_TX_RX_Adapter-01.analog-stereo
説明: USB SPDIF TX/RX Adapter Analog Stereo
ドライバー: PipeWire
サンプル仕様: s24le 2ch 48000Hz
チャンネルマップ: front-left,front-right
所有者モジュール: 4294967295
ミュート: いいえ
ボリューム: front-left: 48287 / 74% / -7.96 dB, front-right: 48287 / 74% / -7.96 dB
バランス 0.00
ベースボリューム: 65536 / 100% / 0.00 dB
シンクのモニター: n/a
待機時間: 0 usec, configured 0 usec
フラグ: HARDWARE DECIBEL_VOLUME LATENCY
プロパティー:
alsa.card = "1"
alsa.card_name = "USB SPDIF TX/RX Adapter"
alsa.class = "generic"
alsa.components = "USB262a:9123"
alsa.device = "0"
alsa.driver_name = "snd_usb_audio"
alsa.id = "Adapter"
alsa.long_card_name = "SAVIAUDIO USB SPDIF TX/RX Adapter at usb-0000:00:14.0-2, high speed"
alsa.mixer_name = "USB Mixer"
alsa.name = "USB Audio"
alsa.resolution_bits = "16"
alsa.subclass = "generic-mix"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
api.alsa.card.longname = "SAVIAUDIO USB SPDIF TX/RX Adapter at usb-0000:00:14.0-2, high speed"
api.alsa.card.name = "USB SPDIF TX/RX Adapter"
api.alsa.path = "front:1"
api.alsa.pcm.card = "1"
api.alsa.pcm.stream = "capture"
audio.channels = "2"
audio.position = "FL,FR"
card.profile.device = "0"
device.api = "alsa"
device.class = "sound"
device.id = "42"
device.profile.description = "Analog Stereo"
device.profile.name = "analog-stereo"
device.routes = "1"
factory.name = "api.alsa.pcm.source"
media.class = "Audio/Source"
device.description = "USB SPDIF TX/RX Adapter"
node.name = "alsa_input.usb-SAVIAUDIO_USB_SPDIF_TX_RX_Adapter-01.analog-stereo"
node.nick = "USB SPDIF TX/RX Adapter"
node.pause-on-idle = "false"
object.path = "alsa:pcm:1:front:1:capture"
priority.driver = "2009"
priority.session = "2009"
factory.id = "18"
clock.quantum-limit = "8192"
client.id = "34"
node.driver = "true"
factory.mode = "split"
audio.adapt.follower = ""
library.name = "audioconvert/libspa-audioconvert"
object.id = "51"
object.serial = "51"
api.acp.auto-port = "false"
api.acp.auto-profile = "false"
api.alsa.card = "1"
api.alsa.use-acp = "true"
api.dbus.ReserveDevice1 = "Audio1"
device.bus = "usb"
device.bus-id = "usb-SAVIAUDIO_USB_SPDIF_TX_RX_Adapter-01"
device.bus_path = "pci-0000:00:14.0-usb-0:2:1.1"
device.enum.api = "udev"
device.icon_name = "audio-card-analog-usb"
device.name = "alsa_card.usb-SAVIAUDIO_USB_SPDIF_TX_RX_Adapter-01"
device.nick = "USB SPDIF TX/RX Adapter"
device.plugged.usec = "17369991"
device.product.id = "0x9123"
device.product.name = "USB SPDIF TX/RX Adapter"
device.serial = "SAVIAUDIO_USB_SPDIF_TX_RX_Adapter"
device.subsystem = "sound"
sysfs.path = "/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.1/sound/card1"
device.vendor.id = "0x262a"
device.vendor.name = "SAVITECH Corp."
device.string = "1"
ポート:
analog-input: Analog Input (type: Analog, priority: 10000, availability unknown)
活動中ポート: analog-input
形式:
pcm
なお，本製品，説明書には，
- 送信：44.1/48/88.2/96/176.4/192Hz, 16/24 bit
- 受信：44.1/48/88.2/96/176.4/192, 16/24 bit
に対応していると記されていますが，本節の最初にも記した通り，本当にこれら全てに対応しているかまでは試していません．
Photo by hyt.
また，以前レビューした USB to SPDIF Optical Audio Converter
Cubilux USB to SPDIF Optical Audio Converter 雑感
Cubilux USB to SPDIF Optical Audio Converter 雑感です．Amazon のブランドページは以下の通りです．いつもの通り結論から書くと，所有しているすべての端末で動作確認ができました．超小型で取り回し...
www.labohyt.net
2024.05.07
は Realtek のチップが使われているようですが，本製品は SaviAudio 製と，中身はかなり違っているようです．
ただし，本製品，最初に書いた通り，なぜか，
なかなか入荷がない！
という問題があります．実は本製品があって，Amazon で販売されていることに気が付いたのは1年くらい前だったのですが，購入するか迷っていたらすぐに在庫切れになってしまいました．その後，販売が再開されていないか定期的に見に行っていましたが，結局手に入ったのは今年の4月の後半で，本 blog 執筆時点だとまた在庫切れとなっています．
という事で，
本製品，欲しい人は見つけたらすぐに捕獲！
しておいたほうが良いでしょう．もちろん，もう入荷されない可能性もあります．
以上！
