I was out to dinner with the wife in Warwick, RI last night..she wanted to hit Famous Footwear afterwords which, well wouldn't you know it is next to a GC So ther they had the PF500 into the 210. I have been wanting to try one for a while, as I dig the Ampeg sound. After the supposed 'Bass Guy' got me a cord and figured out how to hook it up <<<crickets>>>... I was rockin' out with it. The knobs seemed cheap and very lose, not sure if it was the constant floor model being played, but setting that aside, it sounded great. It really got loud with the volume at 2 O'clock. I paired it with Basses that I play now..Fender P and J....WOW, I was impressed. I was even more impressed when I plugged a Music Man Classic Ray...damn that is a nice Bass. I may be pulling the trigger on the PF500 this week to go with my Avatar 112 (8ohm) for practice-smaller gigs, and my Avatar 410 (4ohm) to go with bigger gigs. I was leaning with a GK MBFusion, but this may do it.....may just have to part with my MarkBass LMIII after all. For those who use the PF500 as their new stage choice, Is it definately loud enough and relaible (200 to 400 capacity) for this kind of use? Before I pull the trigger. And yes I will also be going direct.