KNA Pickups VV-3V Violin/Viola Pickup, passive pickup system for violin and viola with volume control, wood-covered piezo pickup (thickness: 1,8 mm), mounting by pushing the pickup into the notches of the bridge, pickup permanently mounted on the elegant ebony output unit (6.3mm jack socket), attached to the frame with chinrest screws, all contact points to the instrument are lined with cork, chrome-plated metal surfaces, weight: 36 g, cable length between pickup and output unit: 10cm, max. impedance: 1500 Ohm.