MC352 into varying-load speaker?

I drove Infinity kappa 7's with my 352 for years. The Kappas are all over the impedance road. I have heard from 2-32 ohms. At least that is various dealers told me. But the 352 came through flawlessly. The autoformers seem to adapt with no problem.

Kck: I am not a fan of "autoformers" in the least. To me, they are blasphemous. If you really want to know my thoughts on them, fire away with questions. Just don't expect "politically correct" answers. Sean
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Sean, confused. Your first post in this thread seemed to imply that autoformers could work. But the blasphemy comment is pretty strong in the opposite direction.

Not knowing where to begin picking your brain, perhaps you could summarize the idea, if it's not asking too much. Essentially, the question would be: "Do autoformers hurt, help or are neutral to sonic quality under most/average circumstances, and in what circumstances do they veer from this stated path"?

Kck: Autoformers act as a buffer. If you have an anemic amp and a speaker system that presents a wild and highly reactive impedance as a load, that "buffer" could be a good thing. Otherwise, that "buffer" acts as a sonic veil between the amp and speaker interface, lowering the sound quality. Using an autoformer with a good amplifier would be equivalent to running hundreds of feet of small gauge highly inductive speaker cable. Would you ever consider doing this under normal circumstances??? Sean
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The autoformer doesn't work like Sean thinks it does.. Mcintosh output transformers are bifilar wound which is a complex technique used to nearly eliminate the inductance associated with the wire. We use it in the lab for special EMI filters (different core setup though). The coupling is just about perfect with a larger bandwidth than the output transistors. Just like tube amps - only better because not all manufactuers have the ability to bifilar wind their trannies.