Must Have for your Sub - Highly Recommend!
As my title suggests, this little gizmo is a must have item for your sub... particularly if you can't reach the volume control. For me, I like a broad variety of music and the bass level for Eminem isn't the same as the bass level I would choose for, say, Neil Young. It is incredibly handy to have a bass control knob at hand. This one is wireless so no wires to manage either.
Pros: Great convenience. Very responsive. Takes you from zero bass to back-tire-lifting-sonic-thumping at the turn of the dial.
Cons: Slight delay in registering with the sub... you get used to it but when I first turn the car on, it's default is wide open!... you need to just touch the unit and it goes back to your current setting.