Thank you for viewing. This is a Yamaha Silent Brass for euphonium. I purchased it about 4 years ago, but I haven't had many opportunities to use it, so I'm putting it up for sale. It has been used only a few times, so the condition is good. However, please note that the instruction manual and box are not included. I have confirmed that it powers on, but as this is a layman's check, please purchase only if you understand this.