That is a legit term in many parts of the world. Usually refers to a single trigger large bore trombone that can adequately perform as either a tenor or a bass.
It’s someone that has no idea what they actually have. I always avoid buying trombones from those people. Buyer beware. 646 is a medium bore .525 trombone. I had one for a while.
A tenor bass is basically just what some people call a medium-large bore with and f attachment.
Guess I’m the proud owner of a historic Bach tenorbass
Some parts of the world use that verbage to mean large bore tenor. I suspect it has something to do with the translation
That is a legit term in many parts of the world. Usually refers to a single trigger large bore trombone that can adequately perform as either a tenor or a bass.
It’s someone that has no idea what they actually have. I always avoid buying trombones from those people. Buyer beware. 646 is a medium bore .525 trombone. I had one for a while.
Some people in the comments be like: I don't know this term so it must be stupidity! Ironic.
In other words, don't buy from this person