Used only once at a reading session. Fully functional, but there are no instructions. Includes the main unit, power cord, and mounting hardware for the microphone stand. Thank you. Powered mixer, equipped with XLR and RCA output terminals. - Model Name: PM08 - Number of Microphone Input Channels: 4 - Output Terminals: XLR, RCA - Power Type: Powered Mixer - Features: Volume control on each channel Thank you for looking.