My first impressions of the Kuhnl & Hoyer 0.512” bore Bart Van Lier Bb trombone are that it has an impeccable and flawless lacquer job, glowing with a sunlit gold lacquer, matte Kuhnl counterweight and generally looks clean and very well refined. Upon picking it up for a play, it sits comfortably in the hand due to a few unique and clever bends of the grip tubes, and with the medium-small bore balances just right, with a silky-smooth and fast slide in the nickel lightweight configuration.
These instruments are hugely popular in the big band scene in Europe, and of course, Kuhnl and Hoyer make everything from slide trumpets to a monstrous F/D/Bb Hagmann-valved contrabass.
A true professional, end-of-the-line jazz trombone full of character, style and shimmer, and at a reasonable price up against it’s competitors. The 0.512” Bart Van Lier would suit a player who needs a little extra weight and girth for soloing, studio or section work from the traditional U.S bore sizes of .500 and .508 and should be on the playing checklist for anyone who wants a seriously delicious instrument to work on.