Silent mute for French horn, SB3X model, made by YAMAHA. - Model: SB3X - Brand: YAMAHA - Product Name: SILENT Brass - Functions: Pickup Mute PM3X & Personal Studio STX-2 for French Horn [Retail Price] ¥35,200 (I saw it being sold for ¥29,920 on Amazon) Used only a few times, so it's in very clean condition overall. The battery case cover on the back is missing, but there are no issues with its operation. Because the outer box is sturdy, I will ship it with simple packaging, with a rain-proof bag over the outer box. (The main unit inside will be wrapped in plastic for protection) I strive for smooth transactions. I would appreciate it if you understand that this is a used item. If you have any questions, please feel free to comment. ☺︎ French horn silent mute practice indoor soundproofing