I have used a P500 for about a year. I have a solid state amp and a tube pre amp. I have used it with the amp plugged into the regen section but after a while I ended up plugging the amp into the UO. I haven't decided what is best with my preamp and I change my mind often, sometimes use my pre amp in the UO and sometimes the regen section. If you use a Juice Bar($200) you will need another power cord like the Plus cable, so add another $200 for that. If you buy a P500, the most important thing to do is use a very good power cord from the P500 to the wall. Use a Plus or a Statement or some other very good power cable. If you don't want to spend the extra $200 to $500 on a very good power cord, it isn't worth using the P500. That is something PS Audio doesn't tell you right up front. They send it to you with a cheap cord that does not help the P500 at all. At least Shunyata Hydra makes you use a decent power cord.
Pro: makes the background so BLACK it's amazing ! It can make your system sound very mellow and similar to tube sound,in the Tube wave mode. It's small vs P300 and has Auto Wave. I use it to turn on the equipment plugged into it. It has the ultimate outlet built in.
Con: It does take away some of the dynamics if you plug your amp into it. Smaller sound stage. Maybe too mellow in Tube wave. Has a fan but it is a very quiet fan.
Conclusion: Like all audio equipment, everything sounds different in different systems.
I hope I helped confuse you more.
Cheeers!
Pro: makes the background so BLACK it's amazing ! It can make your system sound very mellow and similar to tube sound,in the Tube wave mode. It's small vs P300 and has Auto Wave. I use it to turn on the equipment plugged into it. It has the ultimate outlet built in.
Con: It does take away some of the dynamics if you plug your amp into it. Smaller sound stage. Maybe too mellow in Tube wave. Has a fan but it is a very quiet fan.
Conclusion: Like all audio equipment, everything sounds different in different systems.
I hope I helped confuse you more.
Cheeers!