"When energised, Throne Thumper shakes to each beat, through the drum stool and up the spine of the player" The system comprises two basic components; the amplifier and transducer or 'thumper', both ...

Rock and roll lore, stoked decades ago by Spinal Tap, would have you believe that the drummer’s stool is a literal musical ... Dave Grohl in Nirvana. Pearl Jam, which will join Grohl’s former ...