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)