Best processor for heavy metal at around 4.5-5k..?

Isn't the pickup's natural signal mid heavy anyway?

 

anyone here has used the T-rex bloody mary by any chance?

 

not exactly; it's a lot more complex than that. has a lot to do with load matching, types of pickups etc. i had a very in-depth article from a german magazine that really analysed guitar pickups, their inherently complex natures and how they interact with loads. IIRC, the resonant spike for a strat pickup was measured as high as 4kHz, as opposed to the 1-2kHz mids that we tend to accentuate.

so the correct answer would be "it depends".

 

4KHz looks perfect.
It would account for that clangy - jingly - jangly tone of single coils.

 

Korg AX 3000G has great distortions