To start off, i am a beginner to the recorder, and only started on the soprano last year with 2 learning books.
The bass recorder came in a handy bag, with some grease for the joints, a fingering chart (super satisfied about that) and a cleaning stick (rag, or "swab"? not attached).
Assembly of the bass recorder was very intuitive, and i had no trouble getting it set up to play.
When it comes to the tone, you can clearly hear that it's a plastic instrument, but since the tone is so low in pitch, and the instrument is rather big, it doesn't make any negative impact on the instruments sound at all.
The tone is warm, airy, full and it is rather satisfying to play.
As i am a beginner, i can't give a review based on expertise, since i don't know if it is my technique or the flute that fails, but at the very lowest register, it can be a bit challenging to not get into the overtones. I do suspect however that this is due to my "newbie techniques".
Overall this flute is a no-brainer for anyone who is curious about bass-recorders, and for the price you really can't go wrong.
Very satisfied with Thomann, yet again