Comment 3 for bug 1301047

More technical information about Rocksmith Real Tone Cable(almost all the way to the bottom, beneath "Rocksmith Real Tone Cable):
http://forums.ubi.com/showthread.php/802854-Rocksmith-2014-PC-Configuration-and-FAQ-Forums

Here is the output of lsusb -vvv:

Bus 003 Device 005: ID 12ba:00ff Licensed by Sony Computer Entertainment America Rocksmith Guitar Adapter
Device Descriptor:
  bLength 18
  bDescriptorType 1
  bcdUSB 1.10
  bDeviceClass 0 (Defined at Interface level)
  bDeviceSubClass 0
  bDeviceProtocol 0
  bMaxPacketSize0 16
  idVendor 0x12ba Licensed by Sony Computer Entertainment America
  idProduct 0x00ff Rocksmith Guitar Adapter
  bcdDevice 1.00
  iManufacturer 1 Hercules
  iProduct 2 Rocksmith USB Guitar Adapter
  iSerial 0
  bNumConfigurations 1
  Configuration Descriptor:
    bLength 9
    bDescriptorType 2
    wTotalLength 152
    bNumInterfaces 3
    bConfigurationValue 1
    iConfiguration 0
    bmAttributes 0x80
      (Bus Powered)
    MaxPower 100mA
    Interface Descriptor:
      bLength 9
      bDescriptorType 4
      bInterfaceNumber 0
      bAlternateSetting 0
      bNumEndpoints 0
      bInterfaceClass 1 Audio
      bInterfaceSubClass 1 Control Device
      bInterfaceProtocol 0
      iInterface 0
      AudioControl Interface Descriptor:
        bLength 9
        bDescriptorType 36
        bDescriptorSubtype 1 (HEADER)
        bcdADC 1.00
        wTotalLength 39
        bInCollection 1
        baInterfaceNr( 0) 1
      AudioControl Interface Descriptor:
        bLength 12
        bDescriptorType 36
        bDescriptorSubtype 2 (INPUT_TERMINAL)
        bTerminalID 2
        wTerminalType 0x0201 Microphone
        bAssocTerminal 0
        bNrChannels 1
        wChannelConfig 0x0001
          Left Front (L)
        iChannelNames 0
        iTerminal 0
      AudioControl Interface Descriptor:
        bLength 9
        bDescriptorType 36
        bDescriptorSubtype 3 (OUTPUT_TERMINAL)
        bTerminalID 7
        wTerminalType 0x0101 USB Streaming
        bAssocTerminal 0
        bSourceID 10
        iTerminal 0
      AudioControl Interface Descriptor:
        bLength 9
        bDescriptorType 36
        bDescriptorSubtype 6 (FEATURE_UNIT)
        bUnitID 10
        bSourceID 2
        bControlSize 1
        bmaControls( 0) 0x03
          Mute Control
          Volume Control
        bmaControls( 1) 0x00
        iFeature 0
    Interface Descriptor:
      bLength 9
      bDescriptorType 4
      bInterfaceNumber 1
      bAlternateSetting 0
      bNumEndpoints 0
      bInterfaceClass 1 Audio
      bInterfaceSubClass 2 Streaming
      bInterfaceProtocol 0
      iInterface 0
    Interface Descriptor:
      bLength 9
      bDescriptorType 4
      bInterfaceNumber 1
      bAlternateSetting 1
      bNumEndpoints 1
      bInterfaceClass 1 Audio
      bInterfaceSubClass 2 Streaming
      bInterfaceProtocol 0
      iInterface 0
      AudioStreaming Interface Descriptor:
        bLength 7
        bDescriptorType 36
        bDescriptorSubtype 1 (AS_GENERAL)
        bTerminalLink 7
        bDelay 1 frames
        wFormatTag 1 PCM
      AudioStreaming Interface Descriptor:
        bLength 29
        bDescriptorType 36
        bDescriptorSubtype 2 (FORMAT_TYPE)
        bFormatType 1 (FORMAT_TYPE_I)
        bNrChannels 1
        bSubframeSize 2
        bBitResolution 16
        bSamFreqType 7 Discrete
        tSamFreq[ 0] 8000
        tSamFreq[ 1] 11025
        tSamFreq[ 2] 16000
        tSamFreq[ 3] 22050
        tSamFreq[ 4] 32000
        tSamFreq[ 5] 44100
        tSamFreq[ 6] 48000
      Endpoint Descriptor:
        bLength 9
        bDescriptorType 5
        bEndpointAddress 0x82 EP 2 IN
        bmAttributes 13
          Transfer Type Isochronous
          Synch Type Synchronous
          Usage Type Data
        wMaxPacketSize 0x0064 1x 100 bytes
        bInterval 1
        bRefresh 0
        bSynchAddress 0
        AudioControl Endpoint Descriptor:
          bLength 7
          bDescriptorType 37
          bDescriptorSubtype 1 (EP_GENERAL)
          bmAttributes 0x01
            Sampling Frequency
          bLockDelayUnits 0 Undefined
          wLockDelay 0 Undefined
    Interface Descriptor:
      bLength 9
      bDescriptorType 4
      bInterfaceNumber 2
      bAlternateSetting 0
      bNumEndpoints 1
      bInterfaceClass 3 Human Interface Device
      bInterfaceSubClass 0 No Subclass
      bInterfaceProtocol 0 None
      iInterface 0
        HID Device Descriptor:
          bLength 9
          bDescriptorType 33
          bcdHID 1.11
          bCountryCode 0 Not supported
          bNumDescriptors 1
          bDescriptorType 34 Report
          wDescriptorLength 26
          Report Descriptor: (length is 26)
            Item(Global): Usage Page, data= [ 0x0c ] 12
                            Consumer
            Item(Local ): Usage, data= [ 0x01 ] 1
                            Consumer Control
            Item(Main ): Collection, data= [ 0x01 ] 1
                            Application
            Item(Global): Logical Minimum, data= [ 0x00 ] 0
            Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255
            Item(Local ): Usage, data= [ 0x00 ] 0
                            Unassigned
            Item(Global): Report Size, data= [ 0x08 ] 8
            Item(Global): Report Count, data= [ 0x10 ] 16
            Item(Main ): Input, data= [ 0x02 ] 2
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Bitfield
            Item(Local ): Usage, data= [ 0x00 ] 0
                            Unassigned
            Item(Global): Report Count, data= [ 0x10 ] 16
            Item(Main ): Output, data= [ 0x02 ] 2
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Bitfield
            Item(Main ): End Collection, data=none
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x87 EP 7 IN
        bmAttributes 3
          Transfer Type Interrupt
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0010 1x 16 bytes
        bInterval 1
Device Status: 0x0000
  (Bus Powered)