I play through my TS9DX and Palomino (can get pretty heavy to a certain degree, with overdriving and all) and I'm thinking about how some thrash/metal bands get that evil riff sound. Any ideas?

Takamine Gs330S
Fender Standard Stratocaster
Ibanez RG3EXQM1
Epiphone SG G-310

Crate Palomino V16

Ibanez TS9DX
Line 6 Tonecore Uber Metal
Quote by alexi_laiho18
use the tri-tone (aka the devils interval)

i was gonna say that

Gibson Les Paul Standard
Fender American Strat
Taylor 214ce
Mesa Boogie Triple Rectifier (about to be Voodoo Modded)
Keeley TS-808
Boss GT-10 Processor
Boss RC-20xl
+1 for the devil's note
82 Ibanez artist ar105
94 Fender MIJ 72 tele custom reissue
04 prs se soapbar singlecut
97 Simon & Patrick pro flame maple
05 Art & Lutherie cedar 12
Custom Strat

68 Fender Super Reverb
78 Traynor TS200
80's Roland Cube20
I've always though that "Black Sabbath" by Black Sabbath was one of the most evil sounding songs ever... just throwing that out there, I don't have any specific techniques or advice to give
My Rig
>MIM Fender Stratocaster and SX SJM-62
>various magicial noise boxes
>Peavey Classic 50 212

For the funk:
>Ibanez ATK300
>Acoustic B100
^That's the tri-tone they're talking about. Played by fretting two adjacent strings on the same fret.
Two adjacent strings on the same fret would be a fourth.
A tri tone would be:
E 1
A 2

On Black Sabbath the plays a power chord that would be a b5th up.
Stock Gibson Pickups from a 2005 V, I think they're a 498T and 500T set FS/FT
Duncan Distortion (regular spaced) FS

Looking for: an acoustic, recording gear, or $
Check out the metal guitar technique article here for more tips.

When I'm putting together a MIDI track, I just make everything chromatic with some tritones, and occasionally make everything random atonal notes, like in Slayer solos.