Aquarian Electro-Acoustic Series 14IHPK Electronic Drum Accessory Included along with the 14" FSR electro-acoustic in HEAD is the inbox; a combination signal booster, trigger conditioner and in HEAD power supply. Also included in this professional kick& snare triggering bundle is the kick ZONE: an easy to use and reliable bass drum The rims HOT rim trigger is designed to complement the in HEAD, and together they make up a complete snare drum The combination of the in HEAD , the inbox and the rims HOT make for the most accurate and advanced snare drum This professional electro-acoustic trigger solution includes all the triggering tools needed to bring a new level