Kings of Leon have had a pretty good decade. In 2003, when the Oklahoma-born rockers released their debut, 'Youth & Young Manhood,' they were still a club band unknown outside of Nashville, their adopted hometown. With their next four albums, brothers Caleb, Nathan and Jared Followill, along with cousin Matthew, emerged as one of the biggest rock acts of the decade, combining Southern twang with post-punk edge and U2-grade stadium heroics. As the Kings prep for a new album and tour, RCA/Legacy is releasing 'The Collection Box' -- a five-disc set comprising all of their studio albums, plus a live DVD -- and we're giving away a signed copy.

But that's not all the winner of our Kings of Leon prize pack gets. One lucky Diffuser.fm reader also snags a signed poster and a KoL t-shirt. To enter, simply follow the instructions on the widget below.

A must-have for Kings of Leon superfans, 'The Collection Box' includes 'Young & Young Manhood' 'Aha Shake Heartbreak' (2005), 'Because of the Times' (2007), 'Only by the Night' (2008) -- a global smash whose lead single, 'Use Somebody' nabbed three Grammys -- and 'Come Around Sundown' (2010). Rounding out the set is the 'Live at the O2' DVD, which captures the fellas in action at London's premiere arena.

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