A compact synthesizer with filter and voice mix functions. Serial number, etc. cannot be confirmed from the appearance. I used a vintage item about 30 years ago, but I can't tell. I was using a 117V direct connection product, but this unit also has a similar tone. Judging from the design and scratches, I don't think it's a reproduction. - Power cord not included. - Brand: Electro-Harmonix - Model Name: Micro Synthesizer - Country of Manufacture: USA - Functions: Filter sweep, voice mix - Controls: Various sliders and switches Thank you for viewing.