I just received a Hydra three days ago and also have a PS Audio 300 and a 600 (the latter is in for repairs). As soon as I give the Hydra a proper break-in I will post a comparison.
Shunyata Hydra
Anyone been using this? I've got one on order but was wondering how it compares to other highly regarded power conditioners. i know it is not a power conditioner per say but it does improve the power coming out of it. I still plan to hook amps to direct wall outlet. What changes have you experienced?