First off this is a great project, super glad I you have this advertised during etcher installs! With that said, I set this up on a Pi3+ and plugged it in to a Sony sound-bar setup via audio/RCA cables. Everything works fantastic streaming Spotify with the exception of low volume. I have the sound-bar cranked to max volume and the volume on my iPhone XS streaming the Spotify.
Is it possible to use the HDMI to connect to the sound-bar? I know digital connection is better, just not sure of what my options are.
Background on the sound-bar… When hooked to TV set-up with HDMI it is much louder.
Any advice / suggestions would be greatly appreciated.