iPod nano 7th gen bluetooth problems

[rallymonkeygsx]

I bought a green 7th gen ipod nano to use in the car so I dont have to worry about taking up space on the iphone for music. When running the nano through the headphone jack the sound is fantastic as you'd expect, but when i run it through bluetooth the audio really loses a lot of its quality. This does not happen when i run my iphone wifes iphone over bluetooth, the audio sounds just as good as if it were hooked in directly. I returned the nano and got a brand new replacement but had the same results. Is anyone else having this issue or did I just get unlucky twice? 1st post by the way.