Could either amp work?


Question 1. Could the Audio Research VM 220 and/or the Audio Research REF 210 drive the Martin Logan Monolith IIIp? Any preferences and why would be appreciated?

Question 2. Would either amp be a great match for the Martin Logan CLS IIz?

My room is 16' by 24' and 9' in height. I listen to jazz, vocals and classical primarily.
1985tqc
You should be OK with the CLS's. I've heard them powered by amps that put out a lot less power than the ARC's you list. And I'm pretty sure that they weren't the z version either. The z's are easier to drive than the older models.

Here is an impedance graph (solid line) of the CLS IIZ
The dotted line is Quad 57

As you can see, it goes below 1ohm, a tube may sound dull in the highs with these.

http://www.justrealmusic.com/images/graphs/quadclsimp.jpg

Cheers george
One tube amp that may work particularly well with the decreasing-with-frequency impedance nature of the speaker (as shown in George's graph) is the Music Reference RM-200. Unlike normal tube amps, it's power output increases as the frequency decreases.