Richard Dane posted:
A very nice FM2 there, Mr Tibbs. I do love the look of the FM2 & FM3. I have a couple of FM3s but no FM2. How do you find they compare?
I did have a rare AM3 but didn't use it and eventually it was sold to a HK collector for a fairly tidy sum. I still have some photos though...



Richard, some fine looking kit there 
I find FM3 is a tad more 'solid' sounding than the FM2, but the latter has the edge at making the human voice sound palpably real.
They both need a fairly strong and clean signal to get good RF results and ideally a preamp load of 100k Ohms. A simple mod is therefore needed to get them working properly into the 47k load of Naim (and most other) preamps. I think this is why they are often overlooked as a high quality source outside of a Quad system.

Mr Tibbs