My SWR Bass 350 was on the fritz so I decided to get a new amp (used, but new to me). After considering research and budget, I went with the PF 500. I've played bass since 1991 and I've had 3 SWR amps, 3 Eden amps, 2 Ampeg's & then some other crapper beginner stuff. Just plugging straight in to this PF 500 - I get a killer tone. I was playing with a pick today (tuned down to D) and was just amazed on how good this thing sounds. I play it with a Bag End 1x15 and with an ESP PJ 