One year. They also have a 30 day money back. The receiver I got looks brand new. No marks anywhere. They do say there could be some cosmetic blemishes, but mine looks new. If you like Onkyo I think it is hard to beat there prices. I bought a 3007 at Best Buy over a year ago for 1800.00 and they have it for 849.00. I could have saved almost 1000.00. Have seen others on this forum recommend them.
Let us know if you get one. If you buy new they have 2 year warranty. But I think for the savings they are well worth it.