I have the ML Electro Motion ESL's being driven by an McIntosh MC302. The sound is musical bliss. I use the four ohm tap, amp never gets warm even at loud levels. I did add two of the ML Dynamo subs to the mix. Evens out the low end. With the ESL's, be prepared for weeks of placement tweaking. The sweet spot is very narrow. Once you get it right or as much as you are able.... :music:

I have the Summits, Stage, Descent and Passage in-wall surrounds as an HT set-up driven by a Mac-207 amp and the logans really tax the amp.

I have the ML Vantages and C2300/MC302 and the amp barely breaks a sweat and sounds awesome.

I have a pair of Summit X paired with two MC2301s. I like, a lot.

MC452 with ML Ethos working beautifully together.

I am using ML Aerius with C2300 and dual Mc275s as mono blocks. It is a match made in heaven. The pair of Mc275s seem to be perfect for Electrostats. It is hard to beat the higher frequencies of this setup, everyone is impressed...

Summits and C2500/MC302. Initially used the 4 ohm taps but changed to the 8, which in my setup sounds quite a bit more natural to me. Plenty of headroom (although my room is small).

MC2200 driving a pair of ML Aerius i speakers. 4 ohm tap gives better bass but I still prefer the 8 ohm tap for better (perceived) clarity. I am forced to use a 25' long cable (12 AWG) between the amp and the speakers so that probably explains the better bass from the 4 ohm tap since it has a 30 damping factor vs. 16 for the 8 ohm. I haven't tried the 2 ohm tap yet but I suspect the bass will be even better since the manual shows a damping factor of 50. The intriguing part is that the output impedance varies across the taps while the current delivery is supposedly constant due to the presence of the Autoformers.

Just a quick update. I tried running my Aerius i using the 2 ohm taps on my MC2200 last night. I like the sound much better. I feel the higher frequencies are more open and the bass is a little tighter as well. I think my very long speaker wire runs combined with the low impedance of the electrostats at higher frequencies (1.7 ohm @ 20K) are better suited to the higher damping factor of the 2 ohm taps (50). I'm keeping it this way.

I've switched back to the 4 ohm taps as the amp got quite warm, and the powerguard light turned on a few times when playing loud.