I owned the original Hydra and recently tried the PS Audio Power Plant Premier but the SA XE-12 bested them by quite a large margin: more liquidity, more natural tone colors (not as dry as with the PS Power Plant) and I can no longer hear a slight hiss that I had in my system with the Hydra. I'm using it with MAC Wire Delta PC which I like better than the Elrod EPS 3 Sig.
