Yes, I listen to music with just the 804 Diamonds by themselves in stereo. They sound great to me; the bass is very good. I'm using a McIntosh MX121 pre-processor and a McIntosh MC8207 amplifier (200 WPC, 7 channels). For music, I usually play FLAC files through an OPPO-105 and the MX121 balanced analog inputs. I play them in stereo using the "direct" feature to avoid additional electronic processing.
For movies, I use a subwoofer for LFE and either 5.1 or 7.1 depending on the source.