This is a legendary 50 Caliber + head, allowing you to fully enjoy Mesa/Boogie's signature dense overdrive, thick mids, and clear lead tones. Despite its compact size, it boasts a commanding presence and is a practical amp for everything from clean to lead sounds. It also features a front-mounted 5-band graphic EQ, enabling the creation of the立体感 (three-dimensional) sound that is characteristic of Mesa. While easy to handle in terms of size, it delivers the authentic push and responsiveness of a tube amp, making it an attractive option for studios, live performances, and even as a collector's item. The reputation of vintage Mesa amps has been rising in recent years, and this unit is likely to appeal strongly to those who have been searching for one. The exterior shows signs of age with scuffs and minor scratches, and the cover to the right of the equalizer is missing. However, all functions are in good working order. As visible from the back, it is equipped with vacuum tubes. Including its rugged Mesa-like appearance, it has a solid vintage amp presence. Recommended for those who want to own a piece of classic Mesa/Boogie sound, fans of the thick overdrive found in Mark or Caliber series amps, and those looking for a ready-to-go head for live performances. Please examine the photos carefully and purchase with the understanding that this is a used item.