As I recently reported in the Walkabout megathread, I am a fool. Spilled a beer INTO my Walkabout, and it's now in the hands of the Mesa dudes, hopefully being restored to good health. Sadly, this will take a week or two, and I've got gigs, man. So I ran out and bought the first amp I was able to try that sounded good and was cheap: AMPEG PF-500! Actually, I only got to try the 350 as I was in a hurry, and the last 500 was still boxed up in the back. For the extra DI features alone (which I will be using tomorrow night at a rock club gig), and the power, I figured this should get me through a show, and maybe make for a good backup should I decide to keep her (god bless GC's 30 day "rental" policy). Anywho, what with it being turkey day followed by the blackest of shopping days, I'm gonna have minimal time to play this thing before my gig. I've been trying to read through the megathreads, but there's a lot to take in. Tone wise I'm looking for a gritty/grindy SVT-like pickstyle rock tone. Not overly bright or clanky, but not dull or muddy. Here are some general questions; any help or advice will be GREATLY appreciated. (1) Gain / Clipping Light: do I need to pay attention to the light, or can I just crank the gain to taste? On my walkabout I'm usually running the gain up around 1:30 to 2:00... I like to dig in with my pick, and I like the grind. Will the preamp clip in the harsh/gross/nonmusical way like some solid-state preamps can if pushed too hard, or is it ok to ride that knob? (2) DI: Any weirdness with the DI that I should be aware of? The DI level isn't tied to output volume, is it? (3) EQ: I usually tend to push the low mids a bit, usually keep the mid-mids flat, and sometimes cut gank from the high-mids. With the 5 way selector I'm thinking I'll either boost a little at 220 or cut a little at 1.6, depending on the natural voicing of the amp. Any recommended settings for the pickstyle tone I describe above (full and aggressive, grindy but not clanky)? I understand I shouldn't be afraid of "turning the knobs" on this thing. (4) Anything weird I should know about this thing before I gig with it? Stuff to do or avoid doing? Thanks, and HAPPY THANKSGIVING to all!