I have a 4000 and love it, it's got that great Sansui sound that all of us in this forum love... It simultaneously drives two pairs of speakers in my study, a pair of Original Large Advents and a pair of Genesis Physics I's, so it's driving a 4-ohm load no problem. The 40 watts per channel is more than enough for my apartment and listening levels.
Good tuner, great sound, you'll probably enjoy it quite a bit! Does yours have the nice wooden case, too?