Abstract: A drum damper includes a first body having a first surface and a second surface, and the first body includes a slot and a fader button positioned on the first surface of the first body and configured to slide along the slot. A second body is connected with the second surface of the first body and configured to releasably attach with a drum. Flexible bodies are connected with the second body, configured to dampen sound or vibration from a drum head and be in contact with the drum head, and connected with the fader button through the slot so that, when the fader button slides along the slot, the flexible bodies increase or reduce surface area contact with the drum head.

Abstract: A snare drum throw off has handle that is rotatable between a positive engaged position and a positive disengaged position for engaging and disengaging a snare of a snare drum. The tension on the snare when in the positive engaged position is adjustable by a tensioner.

Abstract: An acoustic variable porting system includes an acoustic element and an acoustic variable porting element forming a port into the acoustic element. The acoustic variable porting element is adjustable between at least an open position, in which the port is generally open, and a closed position, in which the port is generally closed. The acoustic element may be at least one of: a sub-kick, a ported drum, and a speaker.

Abstract: A foot pedal for a drum is basically constituted by a foot board, a depression transmission member, a pedal frame having a pair of support members, a rotation shaft, a rocker, a beater rod, and a beater. Herein, the rocker comprises a rocker body and a rod fixing portion having a fixing member receiving portion for receiving a fixing member. In assembly, the fixing member is attached to the beater rod and is then received by the fixing member receiving portion; thereafter, a bolt is deeply screwed into the rocker to press the beater rod to the interior wall of the rod insertion hole, so that the fixing member is correspondingly moved backwards and is completely engaged with the fixing member receiving portion. Thus, it is possible to reliably avoid unwanted axial rotation of the beater rod during the play of a bass drum with the foot pedal.