this is the top model from Keilwerth. Built from Nickel silver, not brass. This material is much harder than brass. This makes this instrument super strong and highly durable. It also partly makes the sound: open, clear and with an incredible volume. Man, this can be loud! You can also play soft of course…. The high palm keys are adjustable for small or big hands. Nice feature, and why doesn’t every brand has this? This one owner instrument also comes with an extra, solid silver neck. This is an expensive but usefull addition. It looks great and the sound gets more full and flexible. It has been in the closet for the last 10 years, so I took it apart completely. The pads are perfect, I have changed high F, low E flat and G sharp, the only ones with signs of use. I did the rest with leather grease and also changed some corks. The instrument is tight, it seals, it is completely in tune and is super fast. Great horn!