I want to thank you all for your input.
>How much power is your line out pushing? You may need an in-line headphone amp. <
I really don't know. I had the jack installed by a professional audio shop. The guy said he checked my headphones for "proper resistance." So I hope that's what you're talking about.
The radio is loud enough, I just can't make out the words. I need more clarity. That is why I think it just needs proper adjusting.
>what headphones are you using? As said above, you may need a line driver.<
The phones are JVC - but not expensive ones. I think I paid about $25 for them on sale. They worked fine in my old truck. If anyone can suggest high-clarity phones, I'd appreciate the recommendation.
>Take this two pages for reference:<
Thank you for that! I will follow all of your collective advice and keep playing with it and adjusting it - listening as I go along.
I'm pretty certain that if I can just find the right combo of settings that this radio will probably be better and clearer than the one I had in the old Dodge. But finding that combo is the hard part.
Thanks so much for your suggestions and input.