The UltraPure System is an active (pickup + preamp) system for acoustic guitar. It consists of the award-winning Pure Pickup, an onboard preamp with sound hole access, an endpin jack, and a Velcro mounted 9-volt battery holder.
The newly designed UltraPure Preamp features +/-20 db bass/low, K&K's proprietary wide band midrange, and treble/high controls, plus an internal gain trimmer, volume control, phase, and low battery indicator. All features are easily accessed at the sound hole.