cat /proc/asound/card*/stream0 Comtrue-inc Comtrue-inc UAC2 Device EVM-GB at usb-0000:00:14.0-5, high speed : USB Audio Playback: Status: Stop Interface 1 Altset 1 Format: S16_LE Channels: 2 Endpoint: 0x01 (1 OUT) (ASYNC) Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000, 705600, 768000 Data packet interval: 125 us Bits: 16 Channel map: FL FR Sync Endpoint: 0x81 (1 IN) Sync EP Interface: 1 Sync EP Altset: 1 Implicit Feedback Mode: No Interface 1 Altset 2 Format: S24_3LE Channels: 2 Endpoint: 0x01 (1 OUT) (ASYNC) Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000, 705600, 768000 Data packet interval: 125 us Bits: 24 Channel map: FL FR Sync Endpoint: 0x81 (1 IN) Sync EP Interface: 1 Sync EP Altset: 2 Implicit Feedback Mode: No Interface 1 Altset 3 Format: S32_LE Channels: 2 Endpoint: 0x01 (1 OUT) (ASYNC) Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000, 705600, 768000 Data packet interval: 125 us Bits: 32 Channel map: FL FR Sync Endpoint: 0x81 (1 IN) Sync EP Interface: 1 Sync EP Altset: 3 Implicit Feedback Mode: No Interface 1 Altset 4 Format: SPECIAL DSD_U32_BE Channels: 2 Endpoint: 0x01 (1 OUT) (ASYNC) Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000, 705600, 768000 Data packet interval: 125 us Bits: 32 DSD raw: DOP=0, bitrev=0 Channel map: FL FR Sync Endpoint: 0x81 (1 IN) Sync EP Interface: 1 Sync EP Altset: 4 Implicit Feedback Mode: No Capture: Status: Stop Interface 2 Altset 1 Format: S16_LE Channels: 2 Endpoint: 0x82 (2 IN) (ASYNC) Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000, 705600, 768000 Data packet interval: 125 us Bits: 16 Channel map: FL FR Interface 2 Altset 2 Format: S24_3LE Channels: 2 Endpoint: 0x82 (2 IN) (ASYNC) Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000, 705600, 768000 Data packet interval: 125 us Bits: 24 Channel map: FL FR Interface 2 Altset 3 Format: S32_LE Channels: 2 Endpoint: 0x82 (2 IN) (ASYNC) Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000, 705600, 768000 Data packet interval: 125 us Bits: 32 Channel map: FL FR Interface 2 Altset 4 Format: SPECIAL DSD_U32_BE Channels: 2 Endpoint: 0x82 (2 IN) (ASYNC) Rates: 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000, 705600, 768000 Data packet interval: 125 us Bits: 32 DSD raw: DOP=0, bitrev=0 Channel map: FL FR