A year ago I asked Axiom the same question for my EP-500 and this was Brent's reply:

"Check out Belkin, APC or Tripplite surge protectors, all are superb units. Look to a joule count of 700 or more."

Panamax Max 2 Sub has gotten a good review from Kal Rubinson of Stereophile. I am using a similar product at present.

John

John
Our HT