Selling Dynaudio c2 what next???

As another former C1 owner (both the original and Signatures) I would say go for the C1's. If you play loud most of the time get the originals but if you don't the MKII/Sig sounds so much better at low to mid volumes. They don't go quite as loud as the originals.

That said the only speakers I prefer over Dynaudio is Raidho. They are much more money. Not even close price wise. The Dyn's are a bargain IMO.

Raidho's are anything but fatiguing. Again as a former Dyn C1 and C1 sig owner I would say the dyn's are more fatiguing (Raidho is better in the mids and highs). That said the bass in the Raidho's don't come close the Dyn C1. The bass drops like a rock with Raidho D1's at 50hz (C1's rated at 45hz but really are closer to the mid 30's). But what they do is so much better than the Dyns. The separation between instruments and vocals is amazing due to a much blacker background. Better depth too. I hear detail like I never knew from the Dyn's. They also are not analytical. But like with electrostatics the Raidho's are very directional meaning a small sweet spot. As one reviewer stated "outside the sweet spot the speakers are good but in the sweet spot Good God".

But like I said before Dyn C1's are a bargain (8,500 for the C1 signatures vs 25,500 for the D1's)(stands optional).

As far as the amp the 4bsst is great but dry sounding. I had the B100sst when I had the C1's and as good as it was the Octave V70se and later the V110 had more 'control' of the sound and not as dry sounding. Naim Supernait2 is also excellent. A friend is using the SN2 w/HiCap driving Dyn C4 Signatures and that works just fine. Very musical.
Good Luck