Hi Jon. I bought a Denon DL103R as well and at a later time a Denon step up. The 103R arrived defective with only one channel working. They exchanged the cartridge without problems. As far as I rememeber they do offer a 12 month warranty unless otherwise stated including a 30 day defective return policy. I might had to pay for return shipping but that was about it.
Good luck.
Rene
Good luck.
Rene