Heh, funny you should mention that Grave song, the album just finished downloading a few minutes before i came back to the metal board.
I had no idea the sound came from the amps, either. I was wondering to myself how the hell they did that, because i know fuck all about guitar playing, but it makes sense now that i know what it is.
I don't think i'll be disappointed here, Autopsy and Dismember are two of my favorite death bands, though Autopsy's doesn't seem evident on Severed Survival, but strangely enough, is on Tortured Moans of Agony. I figured with money and ten years they'd get better amps to handle the sound. Guess not, but i don't have their full discography to make a good judgement on it.