Help with dd1 and android auto

[Alfdawg]

I tuned my 4 channel amp the other day with a dd1. I tuned for a cd and android auto. I got the same max undistorted volume for both which was 38. I have a pioneer nex 4500 and I use wireless android auto.. For android auto I downloaded the test tones and played it thru YouTube music. I played the exact same song thru a cd and apple music on Android auto. And android auto was alot louder. Did I use the dd1 correct for android auto? Are the recording levels different for the same songs on a cd versus like apple music, YouTube music, etc? And android auto volume cannot be controlled by my phone.

[Dafaseles]

If you're worried about it, 1 st try changing the battery in the DD1. I can't tell you how many times that's fixed a problem with those things. 

Though, it could just be that no matter what you play through that deck, assuming it's a clean track, at 38 is when your deck starts to send a clipped signal. No matter what information it's given.