Topping E30 Support on Linux

Topping E30 DAC is supported nearly out of the box on Ubuntu Linux 20.04 (This is my current OS)

Only minor tweaks to /etc/pulse/daemon.conf are required to achieve the best audio quality:

avoid-resampling = true
enable-remixing = no
default-sample-format = float32le
default-sample-rate = 44100
default-sample-channels = 2
default-channel-map = front-left,front-right

Without the changes it will still work, but you won’t be able to achieve the best audio quality