My new Subie has, among other things, HD radio. It's supposed to provide a clearer, better signal. Which it might on broadcast music stations...I haven't really tried that out as I listen to either Pandora or NPR almost exclusively. Pandora does sound a bit better but NPR sounds horrible. It's like you're getting a direct unprocessed signal right off the mics...all room noise and sibilance. Anybody know about HD and have you had a similar experience??

I'm hoping I can just tune to a non HD NPR feed and go back to decent audio.

Sounds "Highly Deceptive" to me. 

Have a listen yourself (apparently):
http://hdiradio.com/
 
Anyway it's just the sample rate they are banging on about:
http://en.wikipedia.org/wiki/HD_Radio
 

Congrats on the new Subie, Ol'pal.  

our campus radio station is offering two HD sub channels, one is blues, which I like, and the other is alternative rock.
The sub carrier means fidelity decreases as the amount of sub HD channels are broadcast.But still listenable .
I had an hd adapter on my in dash receiver that never worked right.
 
I see table top models by Insignia(best buy brand) going for 50-60 bucks , not the best ratings and reviews.
 
Maybe it will go the way of stereo AM radio, and quadraphonic Fm broadcasts