YBA PRODUCTS

Indeed. The Bel Canto, as you say, was no slouch but the YBA top to bottom rings truer to my ears. It is uncanny how much  it sounds like a tube amp. And the power really provides something my SET could not do. is The Black Keys Gold on the Ceiling, Gregory Porter’s Holding On and Pink Floyd, Time to name a few. It’s a very personal thing, but the Woodstock baby in me sometimes loves to go to hard rock ear bleed quality levels. Btw, I am still using my Bel Canto SEP 1 modified SET preamp. It’s nice to be back on the ‘gon

I had a YBA 2 pre amp.
It was dead quiet and nicely refined, but not super special.
Of course that was 20 years ago.

I also have the Audio Refinement integrated amp and CD player. It's an incredible combo. The build quality, attention to detail, sound...all top notch. 

I own a pair of YBA Passion 600 monos and they are very musical. Mine were the baby brother of the highly regarded Passion 1000 and those models went away around 2007. YBA was designed by the owner Yves Bernard Andre from France and was highly used to drive the Focal Utopia speakers of old both being made in France. High quality parts were used throughout including C-core transformers, transistors, vishay resistors, ect. No parts exceptions on these.
Also the lay-out was simple compared to many current designs and runs in class AB maintaining cool temperatures. The sound is very smooth and refined with everything in place and good tight bass. 
Yves is still there in France I am told but implements the highest end product called the Signature line. I am told he is a perfectionist by an ex-dealer I bought mine from. The rest of the line is sourced to another country under his direction I believe. There is a dealer in Dayton Ohio called TMH-Audio that carries the current line and can expound more. 

I have been enjoying my Integre DT for over 15 years. Several other amps (SS and Valve) have come into the picture but the YBA will be with me forever. For the money, and than some, you can't get any better.