I took a chance on the Warp Factor from Hughes & Kettner. I plug it into the clean channel of my Peavey Rock Master. Mind you, I have never played a
Mesa Rectifier, except in a store for 5 minutes. I wasn't looking to
NAIL the sound, just looking for a more modern sounding distortion for 7 string and low tuning. It's pretty cool. It even has a "Sub" button, when pushed in adds this subsonic type low frequency.