If I had complaints it'd be the positioning of the audio jack, I wanted to mount it to the cabinet so that just the volume is accessible but that would block the port

The adjustable volume means the zombie growl can be perfectly adjusted to drown out the motor sound

Pretty good volume with the 2 inch speakers I am using.

It had some seriously impressive volume, yet clean up to max power

Actually I measured current consumption and at a reasonable volume (enough to fill a large room) it draws around

At 15V, the volume can be turned up loud enough to bother me before clipping starts - quite impressive.