2013 Ford Flex audio upgrade walk-through (Part. 1 of 2)
https://www.youtube.com/watch?v=bnYlkQVrvs0
2013 Ford Flex audio upgrade walk-through (Part 2 of 2)
https://www.youtube.com/watch?v=61-O-XoPVMg
I think any distortion that I heard was coming from the mike. The source sounded very very good, at SACD quality, even through my interpretive devices

Are you using a lossless source?