Art -- Yeah, ravages of time to be sure. That's a good point, suggesting (to me, anyway) that a real A-to-B comparison might be the C22 Commemorative and the original LS25, i.e., not mark ii. Thanks for your input.
Mcintosh vs. Audio Research tube preamps
Has anyone had the opportunity to compare, say, Audio Research LS25 with a Mac C22 original or commemorative? They have very similar values on the used market and I was curious as to anyone's perspective. Or say the LS25 (i or ii) and an MX110. I suppose I would expect to hear that the vintage Mac stuff is warmer with more rolled frequencies, but I'd love to get a first-hand impression from somebody. The LS25 mark 1 is also supposedly tube-euphonic, as well. It's a good topic for the old database!