The K&K Sound Big Twin External is a dual-sensor piezo transducer specifically designed for large instruments with low mechanical resonance. The extra strong output signal makes it a versatile choice for a variety of instruments. The two heads allow for positioning in two locations, resulting in improved sound balance and a wider, flatter frequency response. The Big Twin is recommended for piano, grand piano, harp, dulcimer, double bass, cello and even acoustic guitars.

The K&K Big Twin includes an external surface mounted jack. The external jack comes with a self-adhesive bracket for quick and easy placement on the instrument. The pickups are attached to your instrument with a special double-sided adhesive film, which is UV-resistant to ensure a secure bond, even after years of use