The KickPort is a new product from a company called Future Percussion Concepts. It’s a five-and-a-quarter-inch insert that fits on to the resonant head of a bass drum to provide a deep port, very much like that of a bass-reflex speaker. It provides a more defined low-end punch to the bass drum, and reduces the amount of ‘ring’, meaning the sound is more controlled and less dampening is needed to tame the drum’s overtones.
Future Percussion Concepts are based in California, where they sell the Kickport for $44 (£27 at the time of writing). They will ship orders to customers outside the USA, but ask that potential buyers contact them through their web site before ordering.