Chaser, well...I'm an idiot. Yesterday when I first hooked everything up, I too "blew my ears out". So I immediately started going through the module looking for any thing that would adjust input volume and also let me hear my drums. Duh. I connected both my phone and laptop today and after adjusting output volume on either device, I can hear the music AND my drums. Thanks so much for pointing me in the right direction.
Happy to hear it wasn't a hardware issue as that can be a pain to troubleshoot..
Nobody is an idiot..lol....except maybe the designer/engineer who didn't consider the Aux volume/level
Common sense would dictate that if a module has an Aux Audio input feature , there would be either a physical knob/slider on the module or at the very least something in the firmware..even if it's just volume only...
The STRIKE , DM10 MKII Pro modules and the STRIKE Multipad have physical Volume knobs for the Aux input..
EDIT:There are a number of options for a 1/8" inline volume controllers available
Examples
Amazon