Volume Wheel for AudioEngine A2+ Powered Speakers

I love the crisp, rich sound of the uncompressed USB Audio coming from the powered AudioEngine A2+ speakers, it's on board DAC is excellent. However, the small form factor means the volume on/off control is around the back, hard to reach, and given how loud these speakers can get, prone to leaping up too high as you try and adjust the volume a little.

What I wanted was an easy to reach way to adjust the volume - I took the speaker apart, but the volume potentiometer was buried deep and glued