This site contains affiliate links for which we may be compensated.
ButtKicker Mini Concert Transducer$109.99
The ButtKicker is a small, linear motor, which reacts to an audio signal sent by an amplifier. It is similar to a loudspeaker, but instead of moving a cone, and transferring sound waves through the air, it attaches to seats and floors, and sends low frequency sound directly into the listener's body. The effect is amazing.