I recently listened to the Dali 350, and compared it with B&W DM603, Canton 650 and JPW ML1010. Home, I have a Dali 104.
The Dali 350 was the most accurate of them all, just letting the signal coming through. It's therefore sensitive to the sound quality of the equipment and recordings. This also means that it's easy to tailor the sound of the Dali's, just by changing electronics. Do you want a warm and full bodied sound? Try it out with Arcam Alpha8 amp and CD. Wanting more attack? Marantz CD63KI S with PM66KI amp, or Cyrus DAD3 with SL amp.

The bass goes deep and are well controlled. Tight, dinstinctive and taut.
It doesn't have the earfriendly warmth of the DM603, nor the punch and drive of the Canton. But it's clear, accurate and very good - especially for classical and jazz.

The midrange is very sweet and detailed, letting voices coming out with a great sense of presence. Treble is smooth, yet very detailed.

Soundstaging is good with nice depth and width.

Compared with my Dali 104's, it sounds better on all areas. The Dali's extended bass seems overwarm and boomy in comparision and the overall sound has a clout which the 350 lacks.