I use both the older Hydra (orange outlets) and the Hydra 8 in my system. Side by side comparison gives a slight edge to the newer 8. The newer Hydra sounds less dark and a tad quieter. I really don't need two hydras in my system, however; the older model is stunning and I refuse to give it away, as youv'e seen on Audiogon lately. It's a classic and extra outlets are always needed. I actually plug the old Hydra into the new, so both are protected. I do not feel there is a sonic difference in plugging the old into the new, rather than straight into the wall receptacle.
Shunyata Hydra
I'm looking to purchase a used Hydra power conditioner. As I understand there have been 3 versions produced so far, the latest being the new Hydra 8. Would appreciate if someone could enlighten me on the difference between first and second series of Hydra's and how I would be able to physically differentiate them (where possible). Thanks