※ This is a used item. ※ Lightly cleaned. ※ Operation confirmed, but the power switch pops back. When using, it can be used normally by taping it or securing it with cable ties, etc. ※ I believe there is no noticeable scratchy noise. ※ There are some scratches and dirt, but it is a heavy-duty device and operates normally. ※ Recommended for those who understand used items and those who are familiar with equipment and can repair it. ※ 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. Simple and compact 2-channel power amplifier, well-regarded for professional use. It is a simple and compact 2-channel power amplifier, well-regarded 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 sturdy aluminum die-cast body with high heat dissipation. ※ This item has scratches and a switch that pops back. If you are concerned, please refrain from purchasing.