EQ and different compressors, along with their settings can do some pretty remarkable things by themselves, depending on what you're trying to do, and what you're starting with.
I just experimented with the "Replace or Double Drum Track" feature in Logic. It works really well on an audio track that's isolated, like a kick drum mic, snare mic, et al, creating a triggered MIDI track you can then map any sample or software instrument into. Got a tiny kick drum with only an SM57 to mic it? No problem - make it sound like a 22" monster with this! (I can see getting into a lot of trouble with your drummer, though
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