[Android Head-Units] frankienones:
sure: the only difference is the "usb" part :

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# Global configuration section: lists input and output devices always present on the device

# as well as the output device selected by default.

# Devices are designated by a string that corresponds to the enum in audio.h

global_configuration {

attached_output_devices AUDIO_DEVICE_OUT_SPEAKER

default_output_device AUDIO_DEVICE_OUT_SPEAKER

attached_input_devices AUDIO_DEVICE_IN_BUILTIN_MIC|AUDIO_DEVICE_IN_BACK_MIC|AUDIO_DEVICE_IN_VOICE_CALL|AUDIO_DEVICE_IN_REMOTE_SUBMIX|AUDIO_DEVICE_IN_BLUETOOTH_A2DP

}

# audio hardware module section: contains descriptors for all audio hw modules present on the

# device. Each hw module node is named after the corresponding hw module library base name.

# For instance, "primary" corresponds to audio.primary.<device>.so.

# The "primary" module is mandatory and must include at least one output with

# AUDIO_OUTPUT_FLAG_PRIMARY flag.

# Each module descriptor contains one or more output profile descriptors and zero or more

# input profile descriptors. Each profile lists all the parameters supported by a given output

# or input stream category.

# The "channel_masks", "formats", "devices" and "flags" are specified using strings corresponding

# to enums in audio.h and audio_policy.h. They are concatenated by use of "|" without space or "\n".

audio_hw_modules {

primary {

outputs {

primary {

sampling_rates 48000 | 44100

channel_masks AUDIO_CHANNEL_OUT_STEREO

formats AUDIO_FORMAT_PCM_16_BIT

devices AUDIO_DEVICE_OUT_EARPIECE|AUDIO_DEVICE_OUT_SPEAKER|AUDIO_DEVICE_OUT_WIRED_HEADSET|AUDIO_DEVICE_OUT_WIRED_HEADPHONE|AUDIO_DEVICE_OUT_ALL_SCO|AUDIO_DEVICE_OUT_AUX_DIGITAL|AUDIO_DEVICE_OUT_FM

flags AUDIO_OUTPUT_FLAG_PRIMARY

}

}

inputs {

primary {

sampling_rates 48000

channel_masks AUDIO_CHANNEL_IN_MONO|AUDIO_CHANNEL_IN_STEREO|AUDIO_CHANNEL_IN_VOICE_UPLINK|AUIDIO_CHANNEL_IN_VOICE_DNLINK|AUDIO_CHANNEL_IN_VOICE_UPLINK_DNLINK

formats AUDIO_FORMAT_PCM_16_BIT

devices AUDIO_DEVICE_IN_BUILTIN_MIC|AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET|AUDIO_DEVICE_IN_WIRED_HEADSET|AUDIO_DEVICE_IN_BACK_MIC|AUDIO_DEVICE_IN_FM_RX|AUDIO_DEVICE_IN_VOICE_CALL

}

}

}

a2dp {

outputs {

a2dp {

sampling_rates 44100

channel_masks AUDIO_CHANNEL_OUT_STEREO

formats AUDIO_FORMAT_PCM_16_BIT

devices AUDIO_DEVICE_OUT_ALL_A2DP

}

}

inputs {

primary {

sampling_rates 48000 | 44100

channel_masks AUDIO_CHANNEL_IN_STEREO

formats AUDIO_FORMAT_PCM_16_BIT

devices AUDIO_DEVICE_IN_BLUETOOTH_A2DP

}

}

}

usb {

outputs {

usb_accessory {

sampling_rates 44100

channel_masks AUDIO_CHANNEL_OUT_STEREO

formats AUDIO_FORMAT_PCM_16_BIT

devices AUDIO_DEVICE_OUT_USB_ACCESSORY

}

usb_device {

sampling_rates dynamic

channel_masks dynamic

formats dynamic

devices AUDIO_DEVICE_OUT_USB_DEVICE

}

}

inputs {

usb_device {

sampling_rates dynamic

channel_masks AUDIO_CHANNEL_IN_STEREO

formats AUDIO_FORMAT_PCM_16_BIT

devices AUDIO_DEVICE_IN_USB_DEVICE

}

}

}

r_submix {

outputs {

submix {

sampling_rates 48000

channel_masks AUDIO_CHANNEL_OUT_STEREO

formats AUDIO_FORMAT_PCM_16_BIT

devices AUDIO_DEVICE_OUT_REMOTE_SUBMIX

}

}

inputs {

submix {

sampling_rates 48000

channel_masks AUDIO_CHANNEL_IN_MONO|AUDIO_CHANNEL_IN_STEREO

formats AUDIO_FORMAT_PCM_16_BIT

devices AUDIO_DEVICE_IN_REMOTE_SUBMIX

}

}

}

}

---------- Post added at 01:33 AM ---------- Previous post was at 01:21 AM ----------

I am using the ASUS Xonar U3

[IMG="ASUS Xonar 3"]https://www.asus.com/media/US/products/iJWbxsC2AVPZkaCQ/P_500.jpg[/IMG]

I was thinking of trying another one , and ordered a cheap chinese usb dac , from ebay...

Frank