Demoed with what other gear in what mode? That can make a big difference. When I audition, I request the speakers set to large, no sub, stereo via both digital and analog if possible to compare the receiver's DACs to the source's.
I haven't heard a 4802, but I found the 3802 flat and not very engaging for music.
The question was not if you like how your 3802 sounds, but if the 3802 and 4802 have the same characteristic sound.
When I was looking for a receiver, I auditioned the 3802, H/K 510 and Marantz SR6200. Both the H/K and Marantz easily sounded better with 2ch music, and I ended up going with the 6200.
A friend of mine has a 4801 and it does sound good with 2ch music, but he also has a very nice source (I don't remember the model, but it was around $1K), and some nice KEF Q series speakers.