I have no experience with the YG's. Regarding the C1's, one of my dealers has sold them for years and I know someone who gave them a very careful audition up against the Dynaudio Special 25. Both sources report that the C1's are superb monitors.
The dealer said that they are somewhat forward sounding (a bit of prominence in the upper midrange) and that some people are put off by this, and he said that, being a monitor, they can't handle power like a large speaker, but that they do have more headroom than most monitors. Again, overall, he said they are superb.
My acquaintance reported that both Dynaudios are really good, but that the C1 is more refined than the Special 25.
I ran 3.3's for a few years and can tell you that Dynaudio USA very much liked Bryston amps for my speakers, saying that Dyna's like power. I would think, however, that the limitations of Bryston amps (some grain, use of negative feedback, too many output devices mucking thing up) would be more apparent with C1's than with the 3.3's, the former presumably being the better speaker.
Again with the caveat that I have not heard the YG's and do not know the details of the crossover design (which YG is intentionally vague about), the YG's appear to have a complex crossover. I like the openness imparted by well implemented first-order designs, notwithstanding their drawbacks, so on paper at least, I would expect the Dyna's to be more to my liking, but who knows.
The dealer said that they are somewhat forward sounding (a bit of prominence in the upper midrange) and that some people are put off by this, and he said that, being a monitor, they can't handle power like a large speaker, but that they do have more headroom than most monitors. Again, overall, he said they are superb.
My acquaintance reported that both Dynaudios are really good, but that the C1 is more refined than the Special 25.
I ran 3.3's for a few years and can tell you that Dynaudio USA very much liked Bryston amps for my speakers, saying that Dyna's like power. I would think, however, that the limitations of Bryston amps (some grain, use of negative feedback, too many output devices mucking thing up) would be more apparent with C1's than with the 3.3's, the former presumably being the better speaker.
Again with the caveat that I have not heard the YG's and do not know the details of the crossover design (which YG is intentionally vague about), the YG's appear to have a complex crossover. I like the openness imparted by well implemented first-order designs, notwithstanding their drawbacks, so on paper at least, I would expect the Dyna's to be more to my liking, but who knows.