The SV130 provides violinists of all levels with the ability to practice confidently without disturbing others. Though the acoustic sound produced is barely a whisper, with headphones you will hear yourself in the rich, virtual environment of a resonant concert hall. Onboard reverb lets you adjust the ambiance. The addition of an MP3/CD input accommodates play-along practice. An added 1/4" output allows the Concert Select Silent Violin to be plugged into any standard instrument amplifier and played like a normal instrument.