Warpfactory Vocoder Electrix This is a vocoder. It's a voice synthesizer that can be used with just a microphone or connected to a keyboard to create harmonies. It's perfect for live events and audio editing/production. For instructions, please refer to the link below or search "warphfactory electrix vocoder" on YouTube. Brand: Electrix Model: Warp Factory Ultimate Vocoder Category: Multi-Effects Electronics Analog Solid State Format: 19-inch rack mount Number of headphone outputs: 0 Number of MIDI outputs: 1 Number of MIDI inputs: 1 Number of digital outputs: 0 Number of digital inputs: 0 Number of analog outputs: 2 Number of analog inputs: 3 Number of channels: 2 Vocoder Demo: https://www.reddit.com/r/synthesizers/comments/16h9cct/i_just_got_an_electrix_warp_factory_vocoder/ The unit only includes the main unit and power cord, no box. Please understand that this is a used item. Please check the photos carefully. Power-on and operation have been confirmed, and it is working without any problems. There are some minor scratches, but the condition is good. This item has been stored for a long time. Thank you for viewing.