TubeNet

http://www.thomann.de/gb/thomann_profes ... f_tuba.htm" target="_blank" target="_blank

any comment ?

Yep,
It's a great smaller F tuba. Very light with a nice colorful sound. What I like about it is the fifth valve. It's on the large side of the tuning slide. Massive low range IF you are using the fifth valve. Low D-B have that funkiness to it like many F tubas do. Even if you use the fifth valve for low C and B the low D and Db will be much harder. That inconsistent playing in the low register is the reason I passed over it. If you look up my old posts I did a right up on this horn during a trip to Thomann Music.