IQAudio DigiAmp+ HAT Startup Mute/Unmute Issue

This post says the mute issue has been solved.


Is there a menu setting to Unmute on reboots? Sent an email request to IQAudIO a week ago but no reply. :frowning:

I have an IQAudio DigiAMP+, which is working without problem. I haven’t altered any settings anywhere other than to select the DigiAMP+ from the UI

Check out Chapter 15 on page 34 in their user guide [IQaudIO User Guide v20].
Can be downloaded here:

Best regards, C

No joy. Only IQAudio DAC shows under Output Device.

So must you run a script executable on startup to remove mute? No menu pick? Please confirm?

In order to unmute the IQAudio DigiAMP+ HAT the following must be done to unmute on power off reboot.

For automatic unmute on boot, add the following lines to /etc/rc.local (before the exit(0))
#Unmute the Pi-AMP+
echo “22” > /sys/class/gpio/export
echo “out” >/sys/class/gpio/gpio22/direction
echo “1” >/sys/class/gpio/gpio22/value

Putting the line:
in the file /boot/config.txt does not work.