Change the oil every 6,000 miles, and rotate the tires every 10,000. Check the timing belt for cracks once or twice a year.
Seriously - amps fall into the "if it ain't broke, don't fix it catagory. Yes, there's contact cleaner for the RCA's, but plugging and unplugging cable once or twice essentially does the same thing.
If you'll become as obsessive as the typical audiophile you'll be swapping cables a bunch, so you'll keep the contacts clean anyway.
Seriously - amps fall into the "if it ain't broke, don't fix it catagory. Yes, there's contact cleaner for the RCA's, but plugging and unplugging cable once or twice essentially does the same thing.
If you'll become as obsessive as the typical audiophile you'll be swapping cables a bunch, so you'll keep the contacts clean anyway.