Just in time for those rockin' summer concerts is this equalizer t-shirt from Bim Bam Banana. This tee, called the Show Off T-Shirt, has a built-in sound sensitive graphic qualizer panel with a EL panel that will light up depending on what beats are in your general vicinity. Only small and medium sizes remain for this $72 shirt and it will likely make you the coolest or easily the geekiest person at the Phish concert this summer.

Product Page [Via Gearlog]