“This amp has taken me about 10 years to nail down”: A long-lost Beach Boys Dumble that has spent the past 35 years in Hawaii has surfaced – and Jason Momoa is using it on his new album

Actor and musician Jason wears his trademark hat and plays the bass, on the right, his holy grail Dumble Overdrive Special, once owned by the Beach Boys, photographed on a beach in Hawaii.

Jason Momoa can officially stop looking for a new guitar amp because he is never going to top the pedigree unicorn that Trevor Boone has just unearthed for him – a Dumble Overdrive Special that was commissioned for the Beach Boys, housed in a Beach Boys road case.

Boone, of Emerald City Guitars, says it took a decade to track this amp down, and ironically, given its providence, it was found down by the beach, on Kauai, Hawaii, where the same owner has had it for nearly 35 years. We echo Joe Bonamassa's comments: “What a grail.”