The amp is 25 years old and the speakers are 8 1/2 years old. The amp/speaker match should be ok. Has this combo always sounded this way or is this something recent? Before you start spending money, try to pinpoint the problem. Try someone else’s amp in your system or try your amp in someone else’s system. Or borrow an amp from your local dealer. The Krell is a nice integrated but they wear out like anything else. The bottom line is we don't know if the issue is with your amp or your speakers, but you should find out before you spend your money.