Audio Research and Martin Logan Montis

That should work fine. I had my VT-100 on my SL-3's and had no problems. The model you have is easier to drive. Actually, I saw a couple of VT-100 listed here in good shape, at reasonable prices. You would probably be happy with the combo.

I drive my Martin Logan SL3s with an Audio Research Ref 110, and before that a VT 100. Martin Logan speakers work really well with tube amps. But they can sound a bit closed in with out enough power. At one point I had a VT 200 in my system. The SL3s opened up a bit more but not enough for me to justify doubling the number of power tubes. The Ref 110 was a huge improvement over my VT 100.

I know, I have heard how powerful the Ref 75 is. Still if it were me I would opt for the Ref 150. If possible though I would like to hear both amps with the Montis.

The whole Audio Research Ref line of amps is about to be replaced with new SE versions this month. it should be easy to find a good deal on either amp right now.

Jump on ARC asap would be great!!