JK Classic Exclusive Trumpet 4D

I bought this to go with my Thomann Concerto I GMS trumpet and even took it head to head with my long favorite 20d2d. In the rotary the Schilke was very uneven intonation with a poor thin sound. The JK 4D was very rich and intonation was very good.. while I preferred the Denis Wick 2B in my Thomann TRF-23 over the JK 4D flugelhorn MP intonation was still very good and still a keeper for when you need a brighter sound say a march or something. In my new Trumpet the JK 4D, the sound is very beautiful to white hot when pushed. I am very impressed. Even prefer this to my long time preference of the 20d2d and Kanstul 1001… the range of colors is impressive.