About the onboard EQ, there is no active EQ on this one. Here are the controls: Master tone/master volume, preamp on/off and volume, distortion (kinda like a MXR Dist. +), Varitone, coil tap, phase reversal. I have to e-mail the head of the KawaiGuitars.com website to get the wiring shematic so that I can tell you the signal path. That being said, using the varitone with the preamp boost almost acts like a normal EQ but in steps. It can do everything between mellow jazz to brutal thrash with the varitone on high pass with preamp engaged.
And yes, those are vintage DiMarzio Dual Sound Super Distortions.