Re: What is the JS2PRM Phase Switch?
I can tell you what a phase switch does.
The phase switch puts the pickups out of phase with each other by effectively wiring one of them backwards.
What this does for the sound is all the frequencies that are common to both pickups i.e. the bass frequencies will cancel so you are left with the bridge pickup treble content only, no bass.
This gives a characteristically thin quality to the sound.
because the pickups are placed at different points on the string, the cancellation is not perfect.
In the case of a strat even though the pickups are wired in phase, the different positions means that some of the frequency content cancels and you get that position 2 and 4 "honk".