I think Mac equipment in general is deceptively resolving because it is so uncommonly smooth. Real music doesn't have a harsh or electronic edge, or a rising treble to beat you over the head with detail. If you listen to a treble-hyped stereo all the time, you'll be shocked at how "rolled off" the treble sounds at a live symphony concert, even if you're in the first few rows. Macintosh's waveforms and tonal balance are more in keeping with live acoustic music.
07-15-11: Es347
I've found that MAC electronics match up with any speaker you can throw at them. Other amps having higher resolution?...that's what everyone seems to say but the many A/B comparisons I have witnessed hasn't proven that.
If you have resolution plus smoothness, you have refinement.