The Yamaha SV-150 silent violin is perhaps the ultimate silent practice instrument available on the market today. The Yamaha SV-150 is extremely lightweight and is set up by our technicians to feel and play just like an acoustic violin. A special external control box comes with the Yamaha SV-150 adding numerous fun and exciting practice features. Use these features to play the Yamaha SV-150 along to prerecorded accompaniments from your computer, MIDI files, a simple metronome beat, or add effects. The Yamaha SV-150 cannot be played amplified or through headphones without using the included control box. It is available in three classy colors; brown, wine red and black sparkle.