Marantz got back to me this morning. This was their reply.
lo Robert,
Thank you for contacting Marantz Support, we value you as a customer and appreciate the opportunity to be of assistance!
My name is Jim. I am the Tier 2 Technical Support Lead for Marantz. I understand that you have an SA-KI Ruby and you are trying to determine whether the warranty is for three or five years.
Technically it is both. Marantz reference level products, by default have a five year warranty. And the SA-KI Ruby is a reference level product. However, there is clause in the warranty that states that for Super Audio CD players;
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So for the unit itself and most parts and labor the warranty period is five years. For the optical pick-up and CD-drive mechanism specifically, the warranty is three years.
If you have any further questions please feel free to contact us again.
Thank you for contacting Marantz Customer Support. Have a great day!
Warm Regards,
Jim
Tier II Technical Support Lead
Denon | Marantz | HEOS
Sound United North America
So it looks like the warranty is 5 and 3. I feel a whole lot better.