Dynaudio Confidence 5

The C5s are incredible speakers. They sound very similar to the Temptations. I would definitely recommend you buy a pair. They do require A LOT of power so make sure that you feed them accordingly. That 43 hz figure seems a bit wrong. I would estimate they go down to 35hz or at least they sound like that. I play my pair with rel sub and they sound great togeather. But they really dont need a sub, but one does help. Trust me these speakers are worth it....

I'm using the Plinius Sa-250. However, the Classe Omega seems ideal for this amp. It needs lots of current. No necessarily watts. The plinius is good but not ideal. Also the Pass X-350 seems to mate well. What is your present amp?

The YBA PAssion monoblocks would also be ideal. The Nemo is very good. I dont think i would take it over the amps i have mentioned. The Pass Labs is probably your best bet for the money. The Nemos are strange because their top end is rolled off because they were made to go with N 801s. Also if you like the Electrocompaniet sound they are making a set of 400 watt monoblocks that sound basically as good as the nemos for about 6k. That is a good deal it seems. They will be out shortly. In the mean time i would hesitate to even connect your 30 watt amp to the C5s at all. I have never heard a pair of ESL 63 i know they were very highly respected but i dont think that are quite in the same of leauge of the C5 not to mention the C5 looks a lot better.

Don't go tubes. They wont mesh well. You need beefy solid state for these speakers. If I werer you i would get the pass X-350 that just came on audiogon. That would be an ideal match. The nemos are a lot more and may not be worth the extra money. But.... if you can get em for a good price go for it as they have tons of current.