I built two TC preamps this weekend, one with the old values and one with the new values as set out in this post
https://www.freestompboxes.org/viewtopic ... 20#p270383
I also gave them both charge pumps, they are running at about 30V. I have lots of tube amps and tried it with a bunch of them: Dual rec, SLO100, JetCity 22H, VH4, 6505+, BE100, Quickrod
This is my 2c: I can get all the tones the grind pedal gets, but this pedal definitely does not suit some amps; sounds awful and is way out classed by a tube screamer in most cases and generally. I think this is very much a meshuggah fanboi pedal and that's cool. But anyone thinking about one might consider they are getting caught up in the immense amount of fanboi hype around this pedal.
There is some discussion on another forum about voicing issue the pedal has, I wholeheartedly agree with the observations here
http://www.rig-talk.com/forum/viewtopic ... 3&t=186560 and here
http://www.rig-talk.com/forum/viewtopic ... 3&t=191604
What is does sound good with amps that are a bit muddy for modern metal: Dual rec, SLO, JetCity 22H
Sounds bad with most marshalls, friedman
Sounds ok but nothing special with the splawn 6505+ and VH4. Those are tight amps already but still can be boosted for a different texture, i think i'll stick to the tube screamer circuits though.
Another observation is the pot tapers are make the controls pretty odd and very touchy around the sweet spot - I think linear pots might suit better but I havent tried that yet.
All up, a tube screamer or similar is far more versatile when set up as a clean boost, probably a timmy pedal could be dialed in to sound about the same. But if you have a muddy amp like a dual rec or SLO, then the TC pre/grind can be useful.