2 Channel 31 Band (1/3oct) There are scratches and dirt in several places. There are about 3 chips on the knobs. Power switch operation confirmed. The only accessory is the dedicated adapter. There is no instruction manual, but you can view it by searching for the model number online. Audio Input ~ Terminals/Format: XLR/Standard Phone Jack (3P), Electronically Balanced Impedance: 40k Ω Maximum Level: +21dBu Dimensions/Weight (excluding protrusions) ~ Width 483 x Height 89 x Depth 150mm, 2.8kg