igglebert:What have you heard that makes you feel this?
I think a lot of budget speakers have a mid-forward balance that, for example, makes singers sound like they're infront of the speakers rather than with the rest of the sound. For example, the B&W 685 & MA RS range. I'm not saying it's a bad thing but it's not necessarily a good thing.
I also thought that Dynaudio speakers sounded too attacking and therefore unnatural. That particular day I compared the Sonus Faber (not forward), Dynaudio (forward), Nain nSat (forward), MA RS1 (forward) and Wilson Benesch Square 2 (not forward). Dunno, none of this is black and white and I suspect some different amps/sources could change things.
Been listening to the PM6003 again, MS Aviano 1s, NAD kit - quite a few things actually. The PM6003 has surprised me. There are still things I like very much about it but it is one hell of a big and attacking sounding amp and can get a bit too much at times!
Of the stuff that seems to get it right I'd say Rega, Yamaha, and Arcam all seem to find different ways of producing a more natural sound. In terms of small, budget speakers the Diamond 9.1s seem very hard to beat in this respect.