K&K Sound Double Big Twin Upright Bass 4 Pickup Sensors w/Jack The Double Big Twin is a four-headed double bass transducer developed specifically for jazz bass players. It harmonizes very well with jazz bass, because its transmission band includes very high and very low frequencies. The high frequency translation ensures a clean amplification of the finger attack with the picked bass. The low frequency translation refers to a desired very bassy sound picture. Each string of the double bass is transduced separately with the Double Big Twin. This results in an extraordinary balance of sound to accommodate even the pizzicato playing mode. Double Big Twin is easily mounted with the supplied double-sided adhesive film and doesn't require modification of the instrument itself. This adhesive film has been selected carefully because it proved to have excellent qualities for sound transmission. The connection jack is held in a special attachment clamp to be mounted at the A and D strings between string-holder and bridge. We highly recommend one of our K&K preamps for impedance adaptation and pre-amplification. Technical Information: Diameter of each transducer head: 3/4" Height of each transducer head: 1/32" Output impedance: high ohmic Length of connection cable: 1 ft Output: Stereo 1/4" jack, soldered mono mode All products are imported from the USA. All electronic products must be used with a step down/up converter for Indian voltage compatibility.