Yamaha SB2J Euphonium Silent Brass Mute

Yamaha SB2J Euphonium Silent Mutes
Small and light. The module is smaller than a cassette tape & weighs as much as a cassette tape. Battery powered. An external sound source can be plugged into the Aux-In jack allowing the player to play with a favorite song while the Output/Phone jack allows the unit to be connected to a sound or recording system.

Includes: 
Pickup Mute, Stereo Earphones with mic
USB cable (micro USB type B to USB type A)