Made to prepare violinists for stage and studio work, the Shadow SH 945-NFX preamp and pickup system can be simply secured to a violin or viola without the need for any modifications. Once fitted to the bridge, the piezo pickup registers the resonance of the strings and body, turning it into clear, hum-free sound that can then be tweaked to taste with the volume and tone controls integrated into the preamp. The system runs on a 3V battery (not included) and can be hooked up to an amplifier with a standard jack lead (not included).