Pickups are NOT active - They are just built with active sized mounts. 
 
Seymour Duncan Nazgul Bridge & Sentient Neck 7 String Pickup Set - Active Mount Soapbar Covers

Nazgul Bridge

Description
Created for total sonic obliteration, the Nazgûl starts where most passive high output pickups stop. The large ceramic magnet serves up aggressive tones for brutal, drop-tuned, chugging riffs, while the mid range is specifically voiced to bring out the definition from the B & F# strings. Fear not, though, for all of the gain and ruthless attack you're going to use, the notes will still remain fluid and articulate.

Sentient Neck

Description
Built exclusively for 7 & 8 string players, the Sentient neck pickup is the perfect neck pickup for natural, complex warmth and tight articulation. With an alnico 5 magnet and medium strength coils, the blend of vintage PAF and modern tones sounds excellent in both clean and high gain settings.

Players
Aaron Marshall (Intervals), Keith Merrow, Jason Frankhouser