A 1980s-era polyphonic analog synth from Korg. In Korg's lineup of polyphonic synths at the time, it was intended to be the low-cost unit, slotting in at the bottom of the price curve below the Poly-61. As of 2015, Poly-800s remain fairly widely available at a reasonable cost. However, many of them have been modified. A buyer looking to purchase one should have the seller describe all mods, and make sure they are understood and desired before committing to the purchase.