Thomann TR-4000S Bb- Trumpet

Just received this trumpet which seems to be extremely well built, with a very full and big sound, but this is only for those who want this kind of tone !
I don't know why, but I couldn't get all the info I've requested from Thomann prior ordering this trumpet, then I could have avoided to buy it and send it back, just because it's not the sound that I was looking for.
I need to say that these trumpets are excellent for those looking for a big tone, with enough core, very free blowing and responsive, with an easy upper register.
Thomann does not share all technical details of their trumpets ( bell taper, bell thickness, overall weight etc - this should be an improvement action for Thomann in the future, as their trumpets/instruments are NOT that popular as many other well known brands/models ), so I had to find out by myself.
TR-4000S has a heavyweight and a large bell ( similar to Bach 72 taper), producing a very full and big sound, very resonant, that it doesn't break if it's pushed. Upper register is easy enough, probably due to it's reversed lead pipe, but it needs more air to get the best of it :) Overall, the trumpet is very well built, with a very nice finish, very good valves from the first touch (no sticky valves, very smooth action). It feels solid in your hands, well balanced...just as any other professional trumpet on the market.
If I would have known these aspects before, I wouldn't have ordered it, and not because it is not a very good trumpet, because it really is, but not for me !
Later edit : I've decided to keep it and give it a chance - if you can get used with it, learn how to play and control it, it might be one of the best trumpets in the world for the money.

I purchased this TR 4000S along with a TR 500 s in order that we could compare them to see which might be most suitable for our youth marching band. (Kids from 8 to about 16 years)

The TR 4000 S seems well made especially bearing in mind the price. The tone is good and valve response seems fine. Reverse lead pipe is an interesting feature as are the hexagonal valve caps and buttons. This makes it an attractive looking instrument. The case is also well proportioned.

We found that adults and the older kids preferred this instrument to the TR 500 ( perhaps the slightly bigger bell and response in the upper register was influential) whilst the younger players preferred the less expensive trumpet.

Overall a very nice instrument for the price although we have opted to buy a quantity of TR 500's on price grounds, the balance of the trumpet and because of the preference of our younger membership

I have bought a lot of trumpets over the last 40 years. Many are made by brands such as Yamaha, Bach Monette, Getzen, B&S, Schagerl, Schilky, Conn, King, Olds, Martin, so I have relatively good experience with different models over the years.
I wanted to try a Thomann TR-4000S because so many people rave about that model and why not get one when it's so affordable. Nice to have an extra one in the collection too. It has now become my favorite trumpet. It has wonderful intonation and is superb from low F# to C4. but there is one thing that must be done when you acquire this model. It must be washed. I have never experienced a trumpet with so much dust. This can destroy the valves if the trumpet is not washed immediately. This should have been done at the end of production.
I don't think it is possible to buy a better trumpet than the Thomann TR-4000S at such a reasonable price.