YouTuber, Randy Rhodes, does a decent little review of the DigiTech Metal Master. I had my headphones a little loud though and nearly blew my ear drums on the sound demo. I guess that's a good thing in this case.
Profile: http://www.youtube.com/watch?v=iqsZ1Q599Lo
Harmony Central Reviews: http://reviews.harmony-central.com/reviews/Effects/product/DigiTech/X-Series+Metal+Master/10/1
Ultimate Guitar Reviews: http://www.ultimate-guitar.com/reviews/guitar_effects/digitech/metal_master_distortion/index.html
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