I really like how my sr1006 plays, but the tone leaves a little to be desired; the output is a little low and there's a terrible fizz if I boost the treble. It's stock with USA dual coil Barts and the Ibanez vari-mid EQ, volume/blend/stacked bass and treble/stacked mid freq and level controls. I'd really appreciate some recommendations for a replacement preamp that would work with the stock 4 knob routing and tame that annoying high end fizz.