Dean Markley Acoustic Pickup Handmade, Instant Mount. Voiced & Balanced for acoustic strings. Zero Hum. Co-planer Co-axial. Dual coil. Made in U.S.A. Developed for studio recording and is now available to everyone. ZH-7 is the result of a patented coil configuration. The goal, when designing the ZH-7, was to keep that same great sound of the Dean Markley SC-1 ProMag, while doing it with a silent Humbucking coil. ZH-7's patented coil is what allowed us to reach our goal. ZH-7 has the same rich sound as the Dean Markley SC-1 ProMag while having up to 15 time less hum than any of the competition. With a real maple wood housing and an ebony grand piano finish with the Dean Markley signature emblazoned in gold, ZH-7 sounds, looks, and is an acoustical pickup you must have.