YAMAHA Personal Studio STJ

With Brass Resonance Modeling

Original Yamaha technology that effectively cancels the characteristic closed sound of a mute, reproducing the open, natural sound of the unmuted instrument. This reduces stress on players by allowing them to practice and play freely without feeling restricted by the mute.  Brass Resonance Modeling utilizes three simultaneous processes to produce the realistic tone of the brass instrument

70.2 x 30 x 121.3mm

112g (4.0 oz) without batteries

MUTE IN, AUX IN, PHONES (Earphones with mic. Available),

USB (micro USB type-B)

VOL. (main/mic), Reverb type, Reverb depth, Sound (Player/Audience) Power ON/OFF

AA alkaline or nickel-metal hydride batteries x 2 (3V DC)