Shure 520DX "Green Bullet"
This is the mic that turns up on stages where the harmonica is supposed to sound like it's been dragged through a fuzzbox. The engineers keep handing it back.
Overview
What makes the 520DX worth a page in an archive like this isn't bench-test numbers — it's where the thing keeps turning up. The period documentation tells the story better than any spec sheet could: this is a mic that lives on professional stages, in front of engineers who could choose anything, and they keep choosing it for a specific job.
The clearest evidence comes from the road. When Primus toured behind their effects-heavy material, front-of-house engineer Derek Featherstone ran the console, and Les Claypool sang into a Shure 520DX "Green Bullet" as an effects mic, according to Mix (January 2004, p.82). The 520DX isn't the clean vocal mic. It's the colored one, the one you grab when the sound in your head is dirtier and more compressed than what a studio condenser will give you. Seven years later, at the HangOut Festival in 2011, FOH engineer Jason Mills was still putting Claypool on a 520DX alongside a Beta 57A (Mix, July 2011, p.42).
Collectors and players note that the Green Bullet format is the whole point. It has a handheld bullet body and a grip that lets a harp player cup the element and work the proximity effect. The 520DX is built to be held, choked, and pushed. Engineers who work with it describe the sound as an input they largely leave alone. Mills told Mix that the band spends its time on tone and dynamics and that his input processing stays minimal.
Studio use shows up too. In the EQ studio survey from September 2004 (p.112), Studio Hibiki in Mountain View listed a 520DX in a microphone locker that otherwise reads like a Neumann and AKG wish list - U 47, C12, C414s. JT Studios in Memphis ran one alongside a pair of U-87Ais and a rack of API and Chandler outboard.
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