I bought a metal muff awhile ago, impressed by all the youtube demos, and have found no useable tones out of it. I have tried every position, different amps, guitars..nothing works. I decided to purchase a dirty bomb, and I was wondering if it's that much better than the muff, which to me sounds like my old spiders insane channel. The muff is fizzy, muddy, is a one trick pony, and sounds downright cheap.