I use a PS Audio P600 with a JRDG Model 112 power amp plugged into it. In four different houses the system sounded better with the power amp running through the P600. I've used this combo for 10 years powered up 24/7. It has withstood multiple power outages and a near miss lightning strike that took out other components in secondary systems. Never, ever had a problem with this setup.
WTF, the P600 just leaked caesium onto the carpet! It looks like a tough stain to get out.