I had the pleasure of installing this Nazgûl™ & Sentient set into a customers instrument and was absolutely blown away by the results. A seriously good passive HB for heavy tones, loads of detail across the frequency range and made even my bad chugging sound unreal. Duncan have done a great job at creating quality heavy tones from a passive, traditional HB design here. I'll throw this out there, but I'd say this is my personal favourite passive pickup model for modern day metal tones, awesome things!
What SD say:
"Take your guitar to the center of the earth with the Nazgûl and Sentient high output passive humbucker pickups. The Nazgûl combines a large ceramic magnet with custom winding specs. The result is a perfect blend of note articulation, saturation, pick attack, and one of the most brutal chugs you’ll ever hear from a humbucker. It has incredible harmonic content across all frequency ranges, and an insanely tight bass response. The Nazgûl has a seriously aggressive high gain sound that is lively, yet completely controllable.
The Sentient neck delivers a balanced, versatile tone that fits right between our iconic ’59 and Jazz model neck pickups. You’ll get pristine cleans, and fluid leads under high gain. The Sentient is a very articulate vintage output pickup with great dynamic response and a wide harmonic range. It works great for low tunings in all humbucker-equipped guitars.
Hand built in our Santa Barbara, CA factory, the Nazgûl and Sentient both feature a large ceramic and alnico 5 bar magnet respectively, nickel silver bottom plate, and 4-conductor lead wire for multiple wiring options. These high output passive humbucker pickups are also available in both 6-string and 7-string passive mount sets, and are vacuum wax potted for squeal-free performance.."