> Low-latency and USB are incompatible things. When I have a network device connected via USB it is typical to have 1000+ ms pings as a worst case. You won't

> Low-latency and USB are incompatible things. When I have a network device connected via USB it is typical to have 1000+ ms pings as a worst case. You won't achieve real-time latencies, but you'll get close enough for any practical purpose, and you'll anyway get better latency than the current solution of doing line-out -> line-in since those device will usually be present on the USB bus anyway + you have to wait for the DAC and ADC sampling. > AFAIK if you are working with some signal after sound player it is going to be analog. Possible solution lies in implementing a custom sound driver for a tx device and probably a custom microphone driver for a rx device. I'm not trying to do anything to the signal (I'm literally trying NOT to do anything to the signal), the way these audio devices work is usually by transporting PCM samples between the USB host and the USB device. Anything analog is due to the singnal either entering the audio device from an analog source, or leaving the device for an analog destination. > Another possible solution is to get an HDMI input card for rx device, probably the HDMI interface will require having some video stream also instead of just sound. That is an option, but HDMI audio input devices are less standard and would probably not just pop up in your OS as an audio source without additional software or driver support.