mc602

Audio Classics probably already gave it a good going over, and if the caps are still good, there's no need to worry for a while. Just love it...that's a great amp you have there.

Nothing, just keep it away from moisture.

Hopefully, you will live longer than 20 years, (myself as well).  Just use it, Mac equipment is made to last 50 years or more.

I just sold my mc2500. I purchased it in 1987 new. I never even burned out a light in the amp. I kept it in a cabinet. so it stayed clean. A great amp, never let me down. It also had a surprisingly high resale value. Prior to selling the amp, I asked my McIntosh dealer if it was necessary to service the amp. He told me no, that he had seen these amps run longer than this without problems. One note, I was probably in the the lower 8 hours per week range. My new amps are mc601's, love them. I also told my son these would be his one day (I'm 63). He promptly ask me, "how are you feeling?" I know you will always love the 602 until you have to move it.

one of the lights on the right side of one meter went out recently. i would have it replaced but that amp 'weighs' too much to move! LOL!!