After having a RX DT670 for a few years and loving it, I found a 680 on ebay and was told it was like factory new so I pulled the trigger. Just came in a few years ago and it sounds amazing. Popped a CD in and just incredible sounding boombox, very happy with it. Tried the cassette decks and at first they would only click and not play, tinkered with it a bit and ran a head cleaner through one so now deck 2 plays but deck one still just clicks. Maybe there is a remedy for this, someone may know.