MT-2 - Metal Zone
Manufacturer: BOSS
Type: Distortion

Knobs:
Official Description: "Equipped with a dual gain circuit, the MT-2 provides super-long sustain and heavy mids and lows like a stack of overdriven amps. With three-band EQ, a wide range of distortion textures is at your command."

-BOSS

Personal Experience: I've heard this used on a fairly cheap beginning guitar, to a Fender Stratocaster, to my own Yamaha bass, and on every one of them it sounded great. The wide variety of effects that you can create are awesome. The Mid Freq adds alot to its abilities as well. For Deftones style effects, plug it into a bass, and lower the mid range, which will leave you with almost all distortion, like on Engine No. 9. Turn everything up for standard guitar distortion, from light rock sounds, to death metal.