???Anyone Here UpGrade From Yaqin/Cayin/etc... To Another Tube Amp Considered Hi End???

If you are enjoying theYiquin Cayan stay with what you have.  If you have a decent room and higher expectations it's the better Transformers in a great tube amp that is more alive and cohesive and then more enjoyable 
 What speakers do you have them with?

Harbeth M30.1,Nordost Leif series cables,well treated room...Looking at either the Unison Research Triode 25 or Mastersound Box...

Yes, I went from a Cayin A-50T integrated to a Raven Audio Blackhawk LE and the difference is substantial, for the better. The Cayin is a very fine amp, especially at its price but The Blackhawk is clearly better in every way.

^^^ I looked at Raven but everything is sold out,then I came across the Mastersound "Box" at a STEAL of a price & wonder if the investment will bear fruit over the Cayin...Were talking all hand made in Italy,in house transformers,Pure Class A,EL34 Parallel Single Ended(No Push Pull/Class A/B)weighing 15lbs more than the Cayin...

Not sure about the Raven products. I had the Nighthawk MKIII in house and I much prefered my Hegel integrated.
In my opinion, in my system, Raven was one of the most over-hyped products I've heard in 25 years in audio.