Speakers for Lamm ML2.1

(it seems) ...Lamm loads his output stage to push up the harmonics

Strange, why would they do this??
If this were indeed the case, then full-range drivers' characteristics would be indicated (Lowther, Fostex Supravox type), ideally their 16ohm versions.
Wright also notes: Find a loudspeaker that would be fine “as is” and then let ML2 to do with it whatever it could.
I agree. Moreover, at a possible 50k investment you are certainly entitled to outstanding transducers! Cheers

Romy , did you ever hear an ALE P series compression drivers system together with ML2 ? You should , it will make you smile happily for the first time in your last ten years :)
Zanden combo and room treatment help a lot as well.
The thing is speakers are more critical than amps ( just found out that - as an amp freak - after buying 3 dozens of "ultra" high end amps and "only" one dozen of speakers, all for research & pleasure purposes)

For 50K, you could buy Jtinn's used Kharma midi exquisite (originally bought by Tenor Audio) and buy a new Kharma ceramique sub to go with it. Valin called this the best stereo system in combination with your Lamm ML2.1.

i've just gone thru a similar decision process......but not limited to the ML2.1 amps.

i do have the Midi Exquisites that Thom-y suggests as loaners while my ordered VR9's are being built. if my room were a little smaller i would (possibly) keep these Midi's.....they are quite remarkable. they at least match and likely improve on all the coherence of the CRM 3.2 Kharmas but are more dynamic and extended at both ends. my only reservation for you would be their 4ohm load for the ML2.1's.

i would second jtinn's recommendation of the VR9. at 95db efficiency and with the 1000 watt integrated sub it would be an excellent match with your Lamm. i'll have mine in a few weeks......feel free to fly on out to Seattle to hear both the Midi's and the VR9's together (assuming jtinn doesn't sell them between now and then) in my room.

a $50k investment is worth the time and plane fare.

mike thanks for the offer. What Amp are you using for the VR 9's?
andy