HeadCount, the non-partisan organization that encourages voter participation, is teaming up with Grain Audio to auction off signed wireless system speakers. The “Signature Series” Grain Audio Packable Wireless System is a one-of-a-kind. And, take a look at the list of people who have autographed a set:

Willie Nelson
Bob Weir (Ratdog, The Grateful Dead)
Trey Anastasio (Phish)
Jack Johnson
Moby
Gary Clark Jr.
Jeff Tweedy (Wilco)
Derek Trucks & Susan Tedeschi (Tedeschi Trucks Band)
Dave Schools & John Bell (Widespread Panic)
Warren Haynes (Gov’t Mule, The Allman Brothers Band)
Grace Potter (Grace Potter & The Nocturnals)
The Disco Biscuits + Mickey Hart and Bill Kreutzmann (The Grateful Dead)

The items are up for auction beginning today, November 25th, and will be available until December 15th. The auctions can be accessed via Charity Buzz.