Audio-Technica's automatic microphone mixer, the AT-MX781. This high-quality automatic mixer is widely used in professional sound environments, conferences, lectures, events, and broadcasting. It smoothly manages multiple microphone inputs through automatic control and automatically adjusts gain according to the speaker. It delivers particularly stable performance in situations with frequent speaker changes or high speech frequency, such as PA systems, streaming, and conferences. Condition and Operation: All inputs, outputs, and various functions have been tested and confirmed to be working. There are no issues with sound quality or performance. Some indicator lamps do not light up correctly. * This is a visual display issue only and does not affect operation, audio performance, or functionality. The exterior shows some signs of use, but there are no noticeable scratches or major stains, and it is in generally good condition. * Please check the photos for details. Included Accessories: Mixer unit AC power cable Instruction manual Shipping: Will be carefully packed with bubble wrap and cardboard for shipping. Anonymous shipping is available. Notes: Please consider the indicator lamp issue before purchasing. Due to being used equipment, please refrain from purchasing if you are sensitive to imperfections or are looking for a new-like condition. Returns and exchanges are not accepted to prevent product substitution. Audio-Technica Automatic Mixer AT-MX781 Automatic Mixer PA Equipment Broadcasting Equipment Conference Mixer