The KORG MR-16 is a MIDI rhythm sound unit with stereo output and MIDI connectivity. - Brand: KORG - Model Name: MR-16 - Type: MIDI Rhythm Sound Unit - Output Terminals: Stereo Output - Volume Adjustment: Master Volume Knob - Keyboard, Key Buttons: Not included - Adjustment Knob: Tone Adjustment Knob - Connection Terminals: MIDI IN/OUT This is a KORG MR-16 rhythm machine drum sound module. Although it's a rhythm machine, it doesn't have any keyboard buttons. Power has been confirmed using the genuine AC adapter. Currently, I don't have an environment to test it, so detailed checks like sound output haven't been performed, and it's being sold as is. There are few scratches and rust marks, and it's in relatively good condition for its age. A genuine KORG AC adapter is included. Everything in the images is included. I am a non-smoker. I do not have any pets. Shipping Method: Rakuraku Mercari Delivery Thank you for viewing.