My days of playing sax in bands was going back to the late 70s, and no doubt things have moved on, but wouldn't think you'd need a dedicated amp set up?
I tried at the time one of those barcus berry "bug" things attached to the reed, and wired into the PA, in the end I didn't much like it, it was very shrill & clattery sounding, so I went back to just playing into a mic thru the PA which was good enough and what most people did.. (despite sax being a bit rare in bands at that time😁)