.The Schatten UST-1 Undersaddle Guitar Pickup is a high quality, coaxial
element undersaddle pickup designed for steel and nylon string acoustic
guitars. The UST-1 pickup sensor is more than 3 inches long, and can be used
with any string spacing. The UST-1 pickup sensor is not string position
dependent and will provide proper string balance regardless of the string
spacing. The unique polymer cable piezo element that detects vibrations from
all directions and provides a full, rich tone. The UST-1 is a passive pickup
that is designed to be used with a preamp (not included). You can use any
quality preamp with this pickup such as the Schatten DI-Plus Preamp/DI, or you
might consider using the Schatten UST-1A or UST-2A pickups that include a high
quality endpin jack preamp.