“Evil” is subjective but I’d like to think I have a good grasp on it
Anywhooooo…
I’ve owned the Empire and an MTL100 clone built by Jason Tong of Headfirst Amps. They’re pretty different sound-wise but the gain levels are comparable.
The MTL has this massive low mid grunt that’s almost overwhelming at times and can make the amp sound muddy, but it punches like crazy. You’d definitely want to scoop some of that out of there for recording. I liked how the brightness options worked: you can dial in with a pot how much you want. Plenty of gain on tap and sounds great. Definitely an “Evil” amp.
The Empire sounds more modern to me. No frequencies are overwhelming like in an MTL. Despite being a one channel amp, you have a lot of control over your sound between the Depth, NFB, and Edge controls. You can really get the low end and response exactly the way you want it. The transformers are a bit different here: Brian uses the Trainwreck-style overwound transformers to increase punch, string clarity, and — most importantly — the insane cleanup with your volume knob (just like a TW). Not only does this thing sound Evil as hell, but it’s all black with bright red devilish transformers. It’s like if Darth Vader were an amp! Bad to the bone, baby…