NG-2 is the logical choice for musicians who want to professionally amplify the natural sound of their nylon string guitars without modification. With the tension of the tuned strings, the NG-1 Piezo mounts safely and reliably on the classic or flamenco guitar bridge. NG-1 is a passive system that works perfectly with your favorite acoustic amplifier or colored via your favorite preamp. Detachable 3ft lead cable with 1/4" female to 1/8" male included