[Device /dev/bus/usb/1/0/2]
    Class .................. 0x00 (Defined at Interface level) ()
    Subclass ............... 0x00 (Defined at Interface level) ()
    Protocol ............... 0x00 (Defined at Interface level) ()
    Max Endpoint 0 Packet .. 8
    USB Version ............ 1.16
    Vendor ID .............. 0x0d8c (C-Media Electronics, Inc.)
    Product ID ............. 0x0014 (Audio Adapter (Unitek Y-247A))
    Product Version ........ 0x0100
    Manufacturer String .... "C-Media Electronics Inc."
    Product String ......... "USB Audio Device"
    Serial Number .......... ""
    [Configuration 0]
        Configuration String . ""
        [Interface 0]
            [Alternate 0 active]
                Class .............. 0x01 Audio ()
                Subclass ........... 0x01 Audio (Control Device)
                Protocol ........... 0x00 Audio (Control Device)
                Interface String ... ""
                [Descriptor 0]
                    Type .............. 0x24
                    Subtype ........... 0x01 (Header)
                    ADC Release ....... 1.0
                    Total Length ...... 100
                    Interfaces ........ 1, 2, 
                [Descriptor 1]
                    Type .............. 0x24
                    Subtype ........... 0x02 (Input Terminal)
                    Terminal ID ....... 1
                    Terminal Type ..... 0x0101 (USB Streaming)
                    Associated Terminal 0
                    Nr Channels ....... 2
                    Channel Config .... 0x3
                       Front .......... Left Right 
                    Channel Names ..... 0
                    Terminal .......... 0
                [Descriptor 2]
                    Type .............. 0x24
                    Subtype ........... 0x02 (Input Terminal)
                    Terminal ID ....... 2
                    Terminal Type ..... 0x0201 (Microphone)
                    Associated Terminal 0
                    Nr Channels ....... 1
                    Channel Config .... 0x1
                       Front .......... Left 
                    Channel Names ..... 0
                    Terminal .......... 0
                [Descriptor 3]
                    Type .............. 0x24
                    Subtype ........... 0x03 (Output Terminal)
                    Terminal ID ....... 6
                    Terminal Type ..... 0x0301 (Speaker)
                    Associated Terminal 0
                    Source ID ......... 9
                    Terminal .......... 0
                [Descriptor 4]
                    Type .............. 0x24
                    Subtype ........... 0x03 (Output Terminal)
                    Terminal ID ....... 7
                    Terminal Type ..... 0x0101 (USB Streaming)
                    Associated Terminal 0
                    Source ID ......... 8
                    Terminal .......... 0
                [Descriptor 5]
                    Type .............. 0x24
                    Subtype ........... 0x05 (Selector Unit)
                    Unit ID ........... 8
                    Source IDs ........ 10, 
                    Selector .......... 10
                [Descriptor 6]
                    Type .............. 0x24
                    Subtype ........... 0x06 (Feature Unit)
                    Unit ID ........... 9
                    Source ID ......... 15
                    Control Size ...... 1
                       Master Channel . Mute 
                       Channel 1 ...... Volume 
                       Channel 2 ...... Volume 
                    Feature ........... 0
                [Descriptor 7]
                    Type .............. 0x24
                    Subtype ........... 0x06 (Feature Unit)
                    Unit ID ........... 10
                    Source ID ......... 2
                    Control Size ...... 1
                       Master Channel . Mute Volume Automatic Gain 
                    Feature ........... 0
                [Descriptor 8]
                    Type .............. 0x24
                    Subtype ........... 0x06 (Feature Unit)
                    Unit ID ........... 13
                    Source ID ......... 2
                    Control Size ...... 1
                       Master Channel . Mute Volume 
                    Feature ........... 0
                [Descriptor 9]
                    Type .............. 0x24
                    Subtype ........... 0x04 (Mixer Unit)
                    Unit ID ........... 15
                    Source IDs ........ 1, 13, 
                    Channels .......... 2
                    Channel Config .... 0x3
                       Front .......... Left Right 
                    Channel Names ..... 0
                    Bitmap Control .... 0x00 
                    Mixer ............. 0
        [Interface 1]
            [Alternate 0]
                Class .............. 0x01 Audio ()
                Subclass ........... 0x02 Audio (Streaming)
                Protocol ........... 0x00 Audio (Streaming)
                Interface String ... ""
            [Alternate 1 active]
                Class .............. 0x01 Audio ()
                Subclass ........... 0x02 Audio (Streaming)
                Protocol ........... 0x00 Audio (Streaming)
                Interface String ... ""
                [Endpoint 0]
                    MaxPacketSize .... 1x 200 bytes
                    Interval ......... 1
                    Type ............. Isochronous
                    Direction ........ Output
                [Descriptor 0]
                    Subtype ........... 1 (AS_GENERAL)
                    Terminal link ..... 1
                    Delay ............. 1
                    Format tag ........ 1
                [Descriptor 1]
                    Subtype ........... 2 (FORMAT_TYPE)
                    Format Type ....... 1 (FORMAT_TYPE_I)
                    Channels .......... 2
                    Subframe size ..... 2
                    Bit resolution .... 16
                    Sampling Freq ..... 48000, 44100, 
                [Descriptor 2]
                    Type .............. 0x25 (CS_ENDPOINT)
                    Subtype ........... 0x01 (EP_GENERAL)
                    Attributes ........ 0x01 Sampling Frequency 
                    Lock Delay Units .. 1 (Milliseconds)
                    Lock Delay ........ 1
        [Interface 2]
            [Alternate 0]
                Class .............. 0x01 Audio ()
                Subclass ........... 0x02 Audio (Streaming)
                Protocol ........... 0x00 Audio (Streaming)
                Interface String ... ""
            [Alternate 1 active]
                Class .............. 0x01 Audio ()
                Subclass ........... 0x02 Audio (Streaming)
                Protocol ........... 0x00 Audio (Streaming)
                Interface String ... ""
                [Endpoint 0]
                    MaxPacketSize .... 1x 100 bytes
                    Interval ......... 1
                    Type ............. Isochronous
                    Direction ........ Input
                [Descriptor 0]
                    Subtype ........... 1 (AS_GENERAL)
                    Terminal link ..... 7
                    Delay ............. 1
                    Format tag ........ 1
                [Descriptor 1]
                    Subtype ........... 2 (FORMAT_TYPE)
                    Format Type ....... 1 (FORMAT_TYPE_I)
                    Channels .......... 1
                    Subframe size ..... 2
                    Bit resolution .... 16
                    Sampling Freq ..... 48000, 44100, 
                [Descriptor 2]
                    Type .............. 0x25 (CS_ENDPOINT)
                    Subtype ........... 0x01 (EP_GENERAL)
                    Attributes ........ 0x01 Sampling Frequency 
                    Lock Delay Units .. 0 (Undefined)
                    Lock Delay ........ 0
        [Interface 3]
            [Alternate 0 active]
                Class .............. 0x03 Human Interface Device (No Subclass, None)
                Subclass ........... 0x00 Human Interface Device (No Subclass, None)
                Protocol ........... 0x00 Human Interface Device (No Subclass, None)
                Interface String ... ""
                [Endpoint 0]
                    MaxPacketSize .... 1x 4 bytes
                    Interval ......... 2
                    Type ............. Interrupt
                    Direction ........ Input
                [Descriptor 0]
                    Length............ 0x09
                    Type ............. 0x21
                    Data ............. 00 01 00 01 22 3c 00