DiMarzio has always been known for magnetic pickups, but they believe the combination of magnetic and piezo can create a unique acoustic guitar sound. The wideband frequency response of the piezo together with the depth of the magnetic pickup opens up the soundstage, and the ability to select either sound as well as both together offers three distinct sounds. The Angel System consists of The Angel magnetic pickup, a Shadow Nanoflex saddle pickup, and a circuit built into the endpin jack which includes The Angel Active EQ system. They have also positioned volume and mix controls on the soundhole.