I agree with Rod. I had a PS Audio PowerPlant 600 with Multiwave I. It was better than nothing but far short of a significant improvement. Plus, I was able to shut it down on many occassions with my EAD PowerMaster 5x400WPC amp.

I then switched to the Shunyata Hydra (original version) and was very impressed. The noise level dropped far lower than the PP600 and the transient attack was improved because the Hydra doesn't current limit like the PP600 does. The sound stage was dramtically improved, both width and depth.

I don't use a Hydra any longer and have not auditioned the Hydra-8, but I am sure it is better than the original.

If anyone has compared a PP600/300 to an ExactPower, please tell me your thoughts.

Damon