I just bought a Laney VC-30 210, a really clear sounding amp that has highlighted an issue with my JTV59. When I first power up the guitar using the PUPS the top end clarity, especially on the bridge PUP is superb and bright but switching the Variax cct. on and off makes the PUP top end clarity go dull like using the tone knob. Removing and restoring power, (i.e. pulling the jack plug out and in as I dont use a battery), cures the problem until I use the Variax cct. again. Has anyone else noticed this problem or is it my guitar at fault?