EMG ACS PICK UP BLACK Active pickup for acoustic instruments. The ACS employs a unique internal preamp that's been tailored for the phase and frequency response of an acoustic guitar while still retaining a brilliant top-end favored in acoustic guitar tone. Comes with EMG's exclusive quik-connect cable, end pin jack with cable, cable keepers, battery bag, allen wrenches (.062 & .093 inches), velcro dot, and instructions.