The power drum was essentially a regular drum, but played with a large mallet and with an internal amplifier used to reverberate the sounds produced.
Sources
- Star Wars: The Visual Dictionary
Star Wars: The Power of the Force (1995) (Pack: Jabba's Dancers) (backup link) (Picture only)
- Inside the Worlds of Star Wars Trilogy
- Star Wars: Complete Locations
- Star Wars: The Complete Visual Dictionary
Star Wars: 30th Anniversary Collection (Pack: #27: Umpass-Stay (Klatooinian)) (backup link)