I have 2 Hydra2 units. One for transport and dac another for amp and pre-amp. There was a noticable improvement when I incorporaterd the 2 Hydras into my system. YOu have consider the fact that I live in NYC in apartment building where power is $h1t. So, if you have cleaner power, your experience may vary. As a matter of fact, why don't you contact musicdirect and have them send you both the PS Audio and the Shunyata so you can compare in your own system! Then you will know whether or not this is what you need or if so, which 1 worked best. They have 30 days and you can send both back to them and seek a used unit if you think it's worth the price and time. Hydra4 are rarely sold used. You have to be lucky to get one sometimes.
