20-22 years:
JVC (dual cassette & CD) ghetto blaster -- cd player stopped working reliability recently
12 years:
Toshiba 32" CRT TV
Denon AVR-1800 receiver
Paradigm Monitor Speakers -- using some of this set in my newly constructed HT room.
Linksys router/firewall -- just recently replaced by my Telus router when they upgraded me to high speed turbo service.
~ 10-12 years:
PSOne -- doesn't get a lot of use now, but it's still hooked up (to the CRT set).