The YEV is a new kind of electric violin taking its design inspiration from the organic beauty of wood, the simplicity of clean lines, and the comfort of light weight, combined with innovative Yamaha sound to create this gorgeous live-performance instrument. Designed and crafted from six different woods. Just plug it into an amplifier and play - no batteries, no headphones, no preamps necessary. Yamaha dual piezo pickup bridge. Standard 1/4 '' jack. Circuit breaker button for muting. Finish: Natural. Case, shoulder rest and bow are not included.