The E-Fusion 6K offers all the excitement of a “wired” electric instrument, yet it maintains the authentic acoustic sound of a traditional violin. The EF6K violin’s highly accurate violin sound is produced by a quality Shadow piezo pick-up molded into the bridge. A built-in pre-amp with volume control provides plenty of output. Easy to replace standard 9 volt battery is included. In addition to combining the best of electric and acoustic sounds, the EF6K has successfully fused the contemporary and traditional in its design. Extremely lightweight (18 oz, 520g) and easy to handle, the violin features a unique shape by award winning designer, Rich Roland. Meets or beats MENC standards.