Thank you for viewing. This is a 4-channel mixer from Tamura Seisakusho. It incorporates Tamura-made transformers and excels as a microphone preamplifier and line amplifier. It also supports phantom power and battery operation. What I am offering this time is the main unit, power cable, and instruction manual. I purchased it used and have been using it for music production, but I am listing it this time to build a new production environment. ☆Condition of the item ・I have used it with care mainly for recording and mixing at home. ・There are some scratches on the exterior, but there are no noticeable crackles, and each input/output works normally. ・However, the operation of the 2ch microphone input -70 is unstable, and the headphone mini-jack terminal has poor contact. I would appreciate it if only those who can understand it as a used item would consider it. Also, please check my profile.