Ok here is the thread on the scratchy audio with the fix,
Have a look see at your values.
The scratchy sound could easily be changed to great sound.
Just edit vlcd in /usr/bin:
sudo nano /usr/bin/vlcd
and change: --compressor-makeup-gain 12.0
to: --compressor-makeup-gain 0
this compressor should just be used as a limiter and needs no makeup gain…
I thought about sending it back to Pimoroni but now I’m impressed by the sound.