
My one, still in daily use.
KH-4455 IIRC.
Couple of things I could never understand with this unit though: It's got a surprisingly good turntable, a surprisingly good cassette deck, and a very good IC amp. It's even got aux in and record out for connecting a second deck, or a DVD player, or whatever - I'm using the record outs to record LP's to PC.
However - no Dolby on the deck (but it's got record level controls, music search, auto-repeat, and logic control...

), a mono tuner (albeit a very good one), and the most horrid standard speakers ever designed. What were they thinking? Despite these shortcomings, they were still incredibly popular.
The biggest upgrade to a stock Rondo is throwing away the rubbish speakers and using something decent, with some nice cable. I've got a set of JPW bookshelfs hanging off mine, and it sounds great.