Long Live the Knobs!
Crutchfield Customer Review (What's this?)
A no-brainer, just reach over and adjust...no tapping through several steps to find "Sub Woofer Level" and going through settings changes every time your music changes from one genre to the next.
Pros: Simple, Handy, Easy, Immediate Control
Cons: Buying it after you've already installed your Amp and having to pull the vehicle apart again when you could have done it all at once on install day. Get it up front with your Amp.