For private practice, anytime, anywhere! The Yamaha SB79 Silent Brass Trumpet Mute System lets you play as loud as you want without disturbing others. Aux in allows you to play along with CD or MP3 recordings. Echo-enhanced sound mode creates large-room ambience. Volume and input lo/hi controls. Basic system includes Silent Brass module, pickup mute, locking cable, belt loop/strap, button earphones, and 9V battery. Smaller, lighter and more portable The redesigned Silent Brass module is smaller than a cassette tape and weighs about as much. It fits easily into a shirt pocket and can be attached to the player's belt, if desired. This makes the new Silent Brass system much more portable and convenient. Improved sound The sound from this next generation system has been greatly improved over the previous generation. Hiss has been greatly reduced, allowing the player to hear more of himself and less noise. Simplified controls and sleeker look The new module has only a volume knob and an echo switch, eliminating the unneeded extra features and making it even more affordable. Aux In jack This jack allows an external sound source to be combined with the signal coming from the mute or microphone. The player can then play along with their favorite song in practice and performance settings and put the fun back in their practice sessions. Input jack The input jack allows a quick and easy connection to a Yamaha pickup mute for practice or to a Yamaha MC-7 instrument mic for performance. Output/phones jack The output/phones jack allows the Yamaha Silent Brass system to be connected to the included earphones for private practice, an external sound system for sound reproduction, or to a recording system for recording. . . . . .