Parasound Halo - SimAudio Aurora or Bryston

The JC1s, without question, would be my preference. I'm about to sell mine. Why? Well, to buy a pair of the much more expensive Ayre MX-Rs. These are the only amps that could pry the JC1s out of my hands. They are that good.

Disclaimer: mine have been slightly modified with Blowtorch-type internal wiring. They were Bob Crump's personal pair before he passed away last year.

With Dynaudio's, Simaudio is the best match. There is much on the internet about the synergy of Dynaudio with Simaudio.
Forget the Parasounds - they are Taiwanese-made (okay, designed in the USA), single-ended designs with more high-end aspirations than accomplishments (and some good marketing to help). They are heavy (i.e. lots of steel in the chassis) and beautiful looking, but ultimately lack the final word in high-end refinement and musicality.
The Brystons are significantly better, and you can usually get a great deal on Audiogon, plus they have a 20 year warranty to boot. I would love to own Sims, and have listened to them a couple of times with Dynaudio, and the match was heavenly. If only Sim amps were a bit more affordable.....but price aside, wow.

Or the route I went with the better value of Selah Audio speakers and a Gemstone Amp... notice some similarities.

dna2505,

Both the Sims and the Brystons suffer from the typical solid state bugaboos. What they do well, they do VERY well indeed, but they rob the music of life by bleaching harmonic color. The JC-1s do this to a much smaller degree, to the point where it's only just noticeable. Oh, and by the way, the JC-1s have both RCA and balanced inputs.