YSV104 Electric Violin Red. The YSV104 employs the Yamaha SRT Powered system that has been a success in Silent Guitar models. Although the solid-body Silent Violin does not have a resonant chamber, SRT Powered simulates the natural response, body resonance, and sound that the player would experience with an acoustic instrument. Bridge, chin rest, tailpiece, neck, and other parts that affect playing posture and feel are in the same positions as on an acoustic violin and frame designed to allow attachment of standard bridge type shoulder rests. In addition to a headphone jack and supplied earphone for private practice, the YSV104 has a AUX IN jack that can be directly connected to an external audio player or other source for play-along practice. DSP processing ROOM: A combination of clear tone and short reverb that is ideal for practice. HALL: Soft tone with medium reverb that can enhance playing enjoyment.