The Seymour Duncan Blackouts 7-string AHB-1 Pickup has the same amazing 9V active pickup setup as Duncan"s 6-string Blackouts. Thanks to its 2 cover sizes it"s built to retrofit nearly all 7-string electric guitars. Like 6-string Blackouts humbuckers, the 7-string pickups use balanced inputs with a differential preamp for reduced noise. Seymour Duncan Blackouts are voiced for heavy rock with greater dynamic range, less scooped mids, and less compression than other active pickups. Duncan Phase I Blackouts are a direct retrofit for most passive 7-string humbucker pickups. The 7-string Blackouts are available here as a calibrated neck set. Includes 25K pots, stereo jack, battery clip and other mounting hardware. Seymour Duncan AHB-1n Phase I Blackouts are perfect pickups for old school metal, garage, punk, thrash, drop tunings, and other heavy rock styles.25K pots Stereo jack Battery clip and other Mounting hardware