I had the P600 - in my new home with dedicated power, I decided I didn't need it on my tube amp - straight to wall was best. I also traded my tube amp for a digital one (NuForce 9s) and found it didn't help at all.
The PPs run hot and eat power, FWIW.
On the tube amp (in my old house) it provided quite a variety of sounds depending on selected setting - it's a bit like adding dynamics. More vivid somehow. This was with MWII. I liked it there.
To summarize - it depends on your amp and tastes.
Bob Wood
http://www.GreatHomeTheater.com
The PPs run hot and eat power, FWIW.
On the tube amp (in my old house) it provided quite a variety of sounds depending on selected setting - it's a bit like adding dynamics. More vivid somehow. This was with MWII. I liked it there.
To summarize - it depends on your amp and tastes.
Bob Wood
http://www.GreatHomeTheater.com