The 1176 studio compressor is an effects unit that delivers professional sound quality. - Model: 1176 - Type: Studio Compressor - Controls: Input, Output, Attack, Release, Ratio - Manufacturer: Universal Audio Accessories: Instruction manual, box Operation confirmed. I think it's clean because I only used it at home. If you don't need the box, I will discount it by 200 yen. Negotiations for price reductions other than that are not possible.