Probably not. That amp is kind of a classic (Strickland? Hafler? Not sure who's baby that amp is, but there are some knowledgeable audio historians lurking aournd, hopefully they'll chip in). It's probably far less expensive to service than to replace, assuming parts are still available.
I have no idea how such old tech would compare to a new Emo (or, if it were my ducats, ATI). If it works and you're happy with it now, I say rock on and don't worry about it.
Tube gear is best approached with considerable baseline knowledge, so read up before you jump in. If you must dabble, I recommend the DIY route. You'll learn more and spend less that way.