TL;DR: Before buying a PF-500, I'd like to verify whether it's one of the old ones that had the problems with "cutting out". I'd also like to know whether my cab could handle a PF-500. I'd rather tote around an 11lb PF-500 than my 44lb solid-state SVT-350H. There's an Ampeg PF-500 at a local retailer. I didn't know anything about the PF-500 when I came across it, but I can go back to the store & figure out how old the amp is from the serial #. I'd be pushing the PF-500's 300 Watts RMS @ 8 Ohms through my Hartke Transporter 4x10 which has 300 Watts peak @ 8 Ohms (I haven't found info on the 4x10's RMS Wattage). I'm concerned the PF-500 would be too powerful for this 4x10. I use my Ampeg 350H+Hartke TP4x10 setup quite frequently—for band practice/rehearsals at church—and drag it around to a handful of gigs every year. The XLR line out on my 350H has started buzzing, but that's the only thing wrong with my setup. So for Sunday stuff, I run through a Radial DI to FOH & use Avioms for monitoring. For practice at home, I just use headphones through a computer/interface setup.