The Boss AD-8 Acoustic Guitar Processor uses COSM modeling to turn the sound of your acoustic guitar's piezo pickup into any of six premium acoustic guitars. The AD-8 has memory for four different patches to be instantly recalled, so you won't be fiddling with the controls during your show. With stereo balanced outputs and a through-put to your acoustic amp, you simply select the desired guitar model and dial in the amount of body and neck sound you want. Sculpt your tone with a killer 4-band EQ and feedback suppressor, then finish off your sound with some space using the onboard reverb.