McIntosh and Autoformers. . .?


What is an Autoformer, and what kind of difference will it make to the sound? I heard some B&W 803's the other day with the McIntosh 402, and it sounded absolutely unreal! I was so impressed, I am thinking of dumping my current SET gear, and going with McIntosh and B&W's.

A freidn tells me that I only want the new McIntosh stuff with the Autoformers. I don't know why. Will the 202 have similar sonic characteristics to the 402? What about the 6900?

Thanks!

B
hantrax
I really like the new Mcintosh gear. I currently have the MA6900 integrated and I'm upgrading to the MC2102 and C2200 tubed components. The MA6900 is basically the MC202 and C42 preamp in one box. The 402 is a step up in quality, but should be paired with a good Mcintosh preamp to get the most benefit. I really like the Mcintosh sound. it just works in my system. Full bodied, dynamic, great bass, clean, a bit of warmth. And they look really good. Your friend may be recommending the new gear because the older, or rather middle age Mcintosh gear is supposedly not as good. They recently brought back one of the original Mcintosh guys and he's been bringing the designs back up to the level of the early Mcintosh, but of course with new technology. The only problem with the autoformers is their weight. Ugh! Some say Mcintosh is good with B&W, but I like it with Tannoy speakers.
My experience is that I had and still use a MC7205 multi channel amp and I purchased a MC352 about a year ago. The 7205 always sounded good and I was satisfied with all but the power. So I stepped up to the 352 for the front end and WOW!!! What a difference, my understanding from discussions with McIntosh is that the Autoformer uses three "tap in" areas of the output transformer. This permits Mc to produce an amp that is a consistant 350 watts at 2-4-or 8 ohms. Rather than have one output you pick up in three areas which like having three individual output transformers. I don't understand why no other manufacturer hasn't picked up on this technology or a variation of that. I just can't say enough about Mc amps. I also use a MX134 pre/pro and my sincere belief is that I will always own at least Mc amps.