Too much low end takes a bunch of power and starts eating the bass drum's frequencies. I'm still working on an effective live sound without FOH on my R200. Lately I've been using everything at noon, no switches, but that's actually a little bright with my Mustang sometimes. I think I need to roll off some treble & high mid so it doesn't sound too guitarish with a pick. Sometimes I roll everything down to 11 but the low mids, which I turn up to 1. I'm a little suspicious of the vintage switch. I'm not sure I like the compression, but most of the settings in the Tone Pool have it on.