Sam and YY, the Shunyata Hydra is one of the most popular power conditioners. Please re-read my comments on these devices. Even though it's very expensive, the Hydra is still just a conditioner, and therefore in my opinion, not the best use of your money. And when used with amps, can actually degrade performance. I guess their power cords are OK, I've never tried one.
YY, you would be best served with an EP-15A. I don't think they are switchable but I'm sure you could get a 220V version. Check with Brent Jackson at the factory:
TECHNICAL SUPPORT:
800-773-7977 toll free
818-886-5364 outside USA
818-886-0504 fax
info@exactpower.com
I forgot to mention that the Exactpower units (both the regnerator and the balanced power unit) also have a couple of outlets with filters to trap digital noise your DAC or CDP power cords can send back into the power lines. This is a really good thing, and why people who install dedicated circuits often put in an extra one just for their digital gear.
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