Warranty
All warranties are those of the manufacturer. In the event of service, please contact them directly with your proof of purchase.
Some contact info for common brands is provided below:
Bluesound
Harbeth - Tri-Cell Enterprises (distributor)
HiFiMan - Motet (distributor)
JBL
NAD
Pro-Ject - Gentec (distributor)
RHA - Erikson Audio (distributor)
Tivoli