Fender Classic 4: A versatile acoustic guitar preamp system offering precise tone shaping and a natural sound. With its 4-band EQ, you can easily adjust the bass, middle, and treble frequencies to suit your playing style and the sonic environment. The built-in Sonicore™ or Acoustic Matrix™ pickup delivers clear and accurate sound reproduction, making it ideal for live performances or recording. Additionally, the low battery indicator and easy battery replacement ensure uninterrupted playing sessions.