We’ve determined the Little Jake works great on tenor saxophone. It only requires a modification to the mouthpiece, where a hole is drilled and a threaded tap made. The ideal place is likely in the neck area, but this only requires an extra mouthpiece (and a ligature that won’t get in the way).

The sound was very promising. When I had Brandon Wozniak test this on his saxophone when we turned the amp on it was just like increasing the volume on the instrument. The tone was very transparent, it was even difficult to tell it was on except that it was unnaturally loud. Effects worked very well too.

I’ll modify your mouthpiece for free if you send it to me when ordering a Little-Jake. I would say this would be fine on Alto sax or larger, and I can only do this on plastic or hard rubber mouthpieces (not metal). Soprano sax mouthpieces are probably too small – the ligature would get in the way if there’s even a good acoustic place for it. For soprano sax modifying the neck is still probably the only option.