The acs is EMG solution for players looking for a great amplified acoustic guitar tone without the feedback issues. Offering a broader frequency range than a piezo pickup, the EMG acs delivers authentic acoustic tone with enough volume to play alongside a large band. 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. Used by Champion finger style players and rockers alike, this easy to install acoustic pickup is the answer to your acoustic woes.