Audio DAC SHIM very quiet, no controls to change


I recently bought the Audio DAC SHIM for my Raspberry Pi 3 B+ as I was unsatisfied with the low level of audio available through the built in 3.5mm jack.

I’ve installed the SHIM, and after some playing around I’m able to select it as my output device, but the volume level is still really low. I’ve tried adjusting it in the AlsaMixer but I can’t change the volume there and have the error message: “This sound device does not have any controls.”

Is there a way I can control the volume?

Thanks in advance,

Are you using amplified speakers? The signal out of that jack is only good for driving earbuds etc. It won’t drive speakers directly. Same deal for the audio jack on the Pi.

Yeah I’ve tried it through 2 different sets of powered speakers. I have to crank the gain right up to get a reasonable volume.

That’s a shame – I thought as a line out DAC it would have a higher output (line level) than the built in one on the Pi, which I figured was low impedance for headphones.

Is there definitely no way to change the volume?

It will be better “quality” sound than the built in line out. The signal level I would assume to be about the same. I would think there “should” be a way to adjust the level?
I’m a Linux noob if I’m honest so that’s not something I’m up to speed on.
Is the volume slider up full? If not try switching the output to HDMI, set full volume, then switch it back to the DAC.

Something that “may” be messing things up is the Pi Foundation just recently switched to pulseaudio.