Monoblock Suggestion?

I am sure some here, like myself, didn't respond because we didn't have anything useful to offer. My amps, Atma-Sphere M-60's perform better with higher impedance speakers. I am not at all familiar with your speaker, but it would not be a good match with the M-60's on paper anyway. Also, you limited your responses by not stating your budget in your initial request. In all likelyhood the best advice you are going to get will come from the Dali manufacturer or a Dali user that has found an amp match that is special with your speaker.

I tried Pass Labs X-600 on my demanding speakers, but liked the ICE powered Acoustic Reality eAR stereo much more. Now, I have beefy ICE powered H2O monos. These can handle any load, are slighly warm, yet crystal clear. They develope a tightly controled bass, that is articulate, yet never boomy. The affordable H2O monos will make your wife happy, as well as you.

There are many good monoblocks that could work, but what you like is a different issue.

I would suggest several, not in a particular order: VTL 750; Wolcott 220; Krell FPB 450cmx.

So far in y list are,Pass 600,Macintosh MC-501,Krell FPB-350mcx,Any more that I should consider?

Electronic Visionary Systems is coming out with a digital amp in the very near future. They are being beta tested right now. They aren't monoblocks per se, but I suspect they can be used as such, provided you purchase two of course.