Andreas, I have a pair of Tannoy MX-3's. The Tannoy's are not the best speakers I've owned or the worst. They are just consitantly "decent" not great and not bad. They sounded good with the C350 by itself. Like I said in my other post, I really wasn't out to buy a C270 to add to the C350; I just found a good deal. Another reason for buying the C270 is that I have a Bottlehead Foreplay preamp kit, that one of these days I'll build and I thought the C270 would work good with it. Plus I figured it couldn't hurt to have a decent amp around in case I needed it. Or like I said, using the C350/C270 with bigger speakers like Vandersteens or Paradigms. You might hear more of a difference adding the C270 to your speakers than I heard with mine.
-matt
-matt