Legendary metal bassist Geezer Butler, formerly of Black Sabbath, has partnered with Ashdown to auction off 15 Head Of Doom amps that were used during the iconic band's final performances in July 2025.

These custom amps, hand-signed by Butler himself, are now available exclusively on Reverb, along with a certificate of authenticity from Ashdown's Managing Director, Dan Gooday.

The unique opportunity allows fans to own a piece of metal history that also delivers an impressive sound quality.

For musicians seeking the full experience, Ashdown is taking pre-orders for the Cab Of Doom, designed to replicate the specifications of the cabs used by Butler during Black Sabbath's final show.

Interested parties can sign up for email notifications on Reverb to be among the first to know when these rare amps become available.