Anybody have any experience with this preamp? I was thinking of replacing the pickups and preamp in my Ibanez SR506, but a local tech at a wonderful place pierce(thanks, dude!) told me about informed me that the ADX5 and ADX6 pickups are actually not that bad, it is the cheesy Ibanez preamp that makes them sound weak. So, he said that he can install this preamp for $150.00, and that after he does that I will probably love the way the bass sounds. I don't know the model number, it has my choice of Volume/Volume or Volume/Blend knobs, and boost only bass and treble knobs. Suggestions or comments, anybody?