The Parabolic Hammered Copper bowl has the best price to quality ratio. This model has the darkest, most direct and focused tone of Adams Parabolic Bowls. Adams Universal Timpani are designed for all concert and education uses. An easy instrument to operate, the pedal mechanism can be silently locked into place to pinpoint any note. Universal Timpani feature legs that are adjustable to the player’s height while seated, and easily retract into the kettle for transport.