There is a parametric equalizer built into the empeg. Most folks consider it to be top-of-the-line.

Given that 30GB hard drives go for at least $130, you could take it out and sell it somewhere (this board would be a not unlikely place) for a minor profit. Or you could just go with the 30GB. Depends on how much music you have. I personally wish I'd gotten a larger unit.
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Bitt Faulk