※ This item is used. ※ Operation has been confirmed. ※ I believe there is no noticeable scratchy noise. ※ Lightly cleaned. ※ There are minor scratches, etc., but there are no operational problems. ※ Recommended for those who understand that this is a used item and those who are familiar with audio 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 designed to be 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 incorporates a dedicated equalizer circuit that best drives the 101 series, and has 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 efficiency.