MACKIE ONYX 1640 Analog Mixer 16-channel analog mixer, 48v phantom power on each channel, talkback function equipped. - Model: ONYX 1640 - Number of channels: 16 - AUX Sends: 6 AUX SEND lines - EQ Type: 4-band EQ - Main Mix: Main mix output - Submix: Submix output - Talkback Function: Equipped with talkback function - Phantom Power: Supports phantom power There are some scratches and dirt in places. Overall, it seems to have been used sparingly and is relatively clean. I performed a brief, simple operational check before listing it. I was able to output music on all channels via line input. The faders and knobs are working well. Headphones out and talkback microphone were usable. I have never used the phantom power. I have not used all functions and all outputs/inputs, so those I haven't used are unconfirmed. This analog mixer seems to be well-regarded for its sound and intuitive operability. No instruction manual, original box, or accessories. Only the power cable is included. Please understand that not all functions have been fully confirmed, and purchase with no returns or claims. Other items are also listed.