The best speaker you ever heard?


In my opinion, the speaker is by far the most important part of the audio system. After all, it is the only part you hear. OK, the other stuff really matters a lot, but without a great speaker... No go.

I am a bit 'speaker-obsessed' I guess, and now I am wondering: What are the best speakers you have ever heard, and what made them the best?
njonker
Have you guys heard the Rowland, Boulder and Ayre reference amps (the newest versions?).
I've heard Boulder I don't know if it was the signature high end. I thought it was ok. I haven't heard vitus or Ayre.
I liked their signature high-end but I didn't love it. When I heard the price I was in shock.
Calvin, yes having heard the Soulution 501 mono's & 520 pre, I would rate the Vitus SS-025, SS-102,SM-102 monos & SL-102 higher. The Vitus Sig series gear has more control & sounds more organic to my ear. Soulution also don't have any comparable product to the SIA-025 integrated. The Soulution 530 integrated is huge! Though the Soulution 541 sacd player's msrp suggests it should have the wood on the Vitus SCD-025mk2 (atleast on SACD). Better? Probably, but $20k+ better?
Cts, i've heard the older model JRDG & Boulder amps (not Ayre), and previously owned a Boulder 1060. All these companies have an essential house sound, and their latest products build on that and are more refined. Boulder is very quiet, smooth, neutral & has a lot of power/control. I enjoyed my time with Boulder. Paired with an modded Ayon tube preamp ,the 1060 was a perfect match with my old Marten Coltrane Alto's.
I've heard various Rowland products before, including the 625 stereo amp & Corus pre, and they sound very resoloving, quiet, liquid & airy. But they always sound a bit forward and mechanical to my ears compared to Vitus or Soulution. Rowland is a big fan of SMPS psu's which i've never been a fan of. Granted they are military grade & he has been developing them for some time, but i'll pass. Also the Corus preamp is chock full of op amps.