Welcome Zach, That's a heck of a good buy on the 635 but if buying online I'd double check that the sellor is authorized by HK to sell the product, otherwise the manufacturers warranty *could* be voided if they are not an authorized dealer.

I have a 635 and also connected a two-channel amp to run my 80s for the front, makes for a neat little setup and you should enjoy it.

Rick
Our Room

smile