Apparently it is *possible* however, it requires a bit of electronics work. I will see if I can find the schematic I had before and send you the link. It may not be worth it, though. I have yet to get this to work.

-Matt

I know it’s been a long time, but I really want to know if you’ve opened your ST9 :-).

I want to buy a silent brass system for my trumpet, and like you, my first idea would be buying the mute alone, then plug it on a basic pre-amp.

But acording to you, it’s not possible.

So can you tell me if there is another way to use the yamaha mute without using the ST9???

Thanks

Jim