The Q-filter is a noisefree inductor with exceptionally low resistance, encased in a 1” cube for easy installation, that is used on the tone control to reduce the impedance of the pickup overall or only in the highs. A traditional tone control uses a capacitor to preserve lower frequencies while steeply rolling off the response above. The
5.0
6 ratings
5
4
3
2
1
sounds great! installed in my single p90 guitar for more tone options and it did the job beautifully. Bill Lawrence lives on through his wonderful innovations.
J
Justin · Yesterday
I like this Q filter this is the first time I've tried one and have to say it's awesome
C
Christopher · April 14, 2026
This is very unique. It’s not a tone control, it’s much more. With a push/pull you could wire in a tone in the down position, and the Q filter in the up position, and share the knob.