Check the listing for details. Blackstar DA412B 4 x 12-inch Guitar Cabinet. Condition: Very Good - Refurbished. Listed at 1415.97 USD. A Purpose-built Cab Complement to Your DA100 Ruby Head Blackstar’s DA412B is the perfect cabinet companion for your DA100 Ruby tube amplifier head, sporting a plethora of artist-requested upgrades from Doug Aldrich himself. This 4 x 12-inch behemoth of a cabinet sports a quartet of Doug’s all-time favorite speakers — Celestion Vintage 30s, which are revered among Sweetwater’s rockers for their authoritative midrange voice, articulate top end, and powerful bass response. What’s more, the cab matches its amp head sibling with a rich red aesthetic that pays tribute to Doug’s daughter, Ruby. Complete with a closed-back construction for a punchy and projecting tone, the Blackstar DA412B is an ideal cab for any guitarist hunting after a rocking arena-ready roar.