I really have no pining for any more, or to upgrade the Mc. Preamps, power amps, both tube and SS, integrated, and the 3 different sets of Mc. speakers that I`ve owned for decades.
Their SQ performance most certainly exceeds my 67yr. old previously abused hearing.
I`m very grateful that all my SS Mc. preamps/amps continue to function without any problems, or issues, some operating many hrs. daily since purchasing the first brand new in 1986.
Other than replacing their failed front panel lights with LED eight yrs. ago.
Of course, I had to electronically restore my 1975 purchased Mc. MC-30s, 1977 MC-225, and 1993 single MC-60 if I was going to use them.
Still haven`t electronically restored my original manufactured and single owner C-22 that I purchased in 2000, in which I will when it requests me to do so.
My (4) 16 yr. old MC-1201s (2) in the bedroom`s 2 ch. stereo, and the other (2) used in my living rooms tri-amplified HT for 80 Hz on down are asked well below any desired elevated SPL wattage requirements, that they hardly become more than slightly above my body temperature, insures they will never be thermally stressed, even operating all day and most likely never need service for the rest of my life, with the exception of their front panel incandescent bulbs failing, in which the bedroom`s 1201s bulbs finally failed sometime last yr. But I don`t care, since I only listen to what their doing, not what they look like (never been a Mc. meter watcher) while laying in bed listening to music before I finally fall asleep hrs. later.