EMG BTC Control

Easy to install and very flexible. It sounds excellent - even at extreme settings the bass still sounds musical. However, the knobs that came with it are junk: none of the hex set screws would turn properly (using the supplied allen wrench) making them worthless. The worst culprit is the concentric knob for the control itself: neither of the set screws would budge! They also look pretty cheap (cheap black plastic). I ended up throwing them all out and replacing them with good knobs.

This is a very quiet active circuit that sounds great. My only gripe is that the plastic knobs it came with are trash and need replaced - its hard to move the treble pot independently of the bass pot.

Super easy to install.