The KD-7 Kick Trigger Unit lets drummers use their favorite kick drum pedal and a special reverse beater (KDB-7) to trigger a wide range of V-Drums electronic percussion sound modules, as well as other percussion sound modules. This dynamics-sensitive kick drum trigger can be used with a standard kick drum pedal. It features a mix input for chaining two KD-7's for double-bass setup, and comes with a Beater and connection cable (kick drum pedal not included). The KD-7 is the ideal kick trigger for use with the HPD-15 and RMP-1.