el 34 tubes for McIntosh mc 60

Would el 34 tubes make a difference in my McIntosh mc 60's. I find the sound is too harsh. I like my mc 225 a lot better.

the 225 was always my fav amp also. try kt-88's in the sixty,I dont believe it willtake el 34's
Those amps don't usually sound harsh. If anything they sounds soft. How old are the tubes currently in there? When was the last time you had them serviced? G