Editor Reviews:

Product Description:
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. System includes Silent Brass module, pick-up mute, locking cable, belt loop/strap, button earphones, and 9V battery.Smaller, lighter and more portableThe 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 Silent Brass system much more portable and convenient.Improved soundThe 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 the instrument and less noise.Simplified controls and sleeker lookThe module has only a volume knob and an echo switch, eliminating the unneeded extra features and making it even more affordable.Aux In jackThis jack allows an external sound source to be combined with the signal coming from the mute or microphone. Players can then play along with their favorite song in practice and performance settings and put the fun back in their practice sessions.Input jackThe 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 jackThe output/ phones jack allows the Silent Brass system to be connected to the...

Rating : - Excellent option when you need a sound-proof practice room
The product works as advertised, which I can't really say for most products with as much marketing material as the Silent Brass System for Trombone. I have a slightly older revision of SBS and use it regularly in my apartment.

As another reviewer mentioned more emphatically, make sure you don't become dependent on the resistance and feedback from the mute. It definitely changes all of my trombones drastically versus an open horn, but I won't go as far as to dissuade owning one. Practicing with the mute is 100% improvement over no practice at all!