e-Brass is the finest and latest silencer for brass instruments! Just put the e-Brass in the bell, and the sound will be reduced. (Approximately 35dB) The live sound, which is picked up by a superior microphone, can be listened through the headphone, and the metronome and digital echo modes subserve an efficient and enjoyable practice. It can be achieved to record a performance, make your original CDs, or play and battle with many great artists by connecting e-Brass audio devices. Also, a new sound would be created with thousands of effects in the market. The possibility is infinity and all up to you! Let your dream come true with the e-Brass.