※ This is a used item. ※ Operation has been confirmed. ※ Lightly cleaned. ※ There is no noticeable scratchy noise, and it is in good working condition. ※ It is usable, but the L+ red pin is missing. Please refer to the image. The terminal side is usable without any problems. ※ There is some discoloration, minor scratches, and sticker residue, but it operates normally. ※ Recommended for those who understand that this is a used item and those who are familiar with the equipment. ※ This is a description found online. I hope it helps. BOSE Model number: 1705 2 ・ The entire body case uses aluminum die-casting, which is used as a heat sink. A simple, compact 2-channel power amplifier that is also popular for professional use. This is a simple, compact 2-channel power amplifier that is also popular for professional use. It is equipped with slide volume controls that allow independent volume adjustment for left and right channels. It has a built-in dedicated equalizer circuit that best drives the 101 series, and it is the same width as the 101MM, with a compact size of 60 millimeters in height. It uses a strong aluminum die-cast body with high heat dissipation. ※ If you are concerned about scratches, etc., please refrain from purchasing.