My Raspberry works fine with volumio and two different USB-DACs.
But the Nanasound Standard DAC2 doesn´t work at all.
I´ve tried everything: installing the dac as Plugin after a clean volumio install, setting up a volumio with integration of dac from nanosound-website.
Always the same: no sound, display deactivated and the red light on the dac as well as the on/off-button are only lighted when i power them by the corresponding usb-plugs.
setting are ok and I´ve started the system several times.
When I think about the fact how good it works with every USB-Dac and that they are recognized without special driver, the nanosound is a shame.
configuration: DAC2 standard connected directly to is Pi 4 with newest volumio and plugin-download.
After powering the Pi and the outer USB of the DAC with 3A-power supply it works.
Butonly after a fresh boot. The switch on the DAC is useless. If I switch the DAC off the display stays on. If I power the DAC again nothing happens except a crash of the system. To get the system working again I have to reboot the Pi.
This doesn´t happen with my two USB-DACs (Arcam rdac and Topping T50s). If I forgot to switch them on the app tells me that they are missing. After the are switched on, they´re recognized and everything works fine.