The easy-to-use VC-1 reproduces accurate cello tone while requiring zero modification to your instrument. Neatly-finished shim discs ensure the perfect fit. The 1/4" socket jack attaches securely to the tailpiece with a Velcro band. The piezo sensor has a lightweight wooden casing to achieve maximum tonal sensitivity and transmission. VC-1 has a passive design that reproduces the natural sound of the instrument with no need for a battery. The pickup comes with additional neatly-finished shim discs for fitting the sensor in narrow bridges.