Cant catch a break. My alternator shorted, temporarily bypassing my voltage regulator. Blew my fusible link, and radio fuse. Replaced them both, as well as the battery, installed an internally regulated alternator and still no audio from the Retrosound. I don't know if they'll replace it *again*, especially since it was my electrical system, not their unit itself. However, their fuse did fail to protect the unit..

Fuses limit current. Your voltage was out of spec since you weren't properly regulating the voltage.

Make sure your charging system is working properly before installing any more electronics.

Yeah, the new alternator appears to be working good, and regulating correctly. The old alternator was of poor quality from a local parts store, came stripped, the wrong size and always performed poorly. And now its possibly ruined a $300 radio, so its retired.

To close this up, again, Retrosound agreed to warranty the radio again and now its working great. They have more than earned my recommendation in the customer service dept.