What intrigues me about the 6900 is the futionality of the autoformer, not available on the 6300 or 6500, the 2275 obviously has transformers that acomplish much the the same thing as do most tube amps. I understand the theory behind the autoformer, but I'm not sure it sounds any better than the direct coupled 63,6500s. I don't need much power. I'm leaning towards the SS becaue I already own a CAT JL2 amp, and a 30 watt class A tube integrated. I've heard Mac SS satisfies tube lovers, and they are obviously less costly over time, and perhaps more reliable over time. That being said, if the 2275 clearly sounds better than its SS brehtren, I choose it. I do wonder if there are better discontinued SS integrateds in the line and what they would be.
