Hi. I’m very new at this so please be patient. I have a RPI feeding my Tone Board when then feeds a Class D amp. I am using Volumio on my phone and can control volume this way so I have not added a volume pot to the amp board. The only thing that I would like to add is a mute button. When receviing a phone call this would be handy to just shut off the music without trying to do in on the phone prior to taking the call.
Is there an easy way to do this via the Tone Board? Or would be easier trying to do it directly on the signal from the DAC to the amp. I was thinking of a signal relay or something that switched to nothing but I’m sure there is a better way.