Not sure of the bitrate, but I suspect it too be somewhat higher then MP3s. I'd guess somewhere inbetween that and the conventional 44.1/16 rate of CDs. On the other hand, FM is limited to 15,000 cycles so there is another trade off. Overall, the HD broadcast seems to be superior to it's analog brother, simply because of the noise level, which is extremely low in the HD mode. I also am enjoying the Sony and still think it's a great purchase. I have raised it off the shelf using 4 hockey pucks (finally put them to good use) and have noticed a temperature drop using my infrared thermometer. Now reads about 88 degrees, whereas, the first day was in the mid 90s.
The 2 things I don't like about the Sony (but I'm over it) are volatile memory and can't direct access stations via remote's numbers (like entering 92.5). But over all, it is a great addition and overall value in my books is quite high.
Wayner 
hi wayner,
i must humbly disagree w/your assessment of the sound of hybrid digital vs analog; imo analog sounds better. while i haven't done the forced-analog mod to my sony, so i cannot a-b an hd station back-n-forth between its analog & hd signals, when i compare the sony w/a regular analog tuna, the hd stations seem to be a little bit more sonically degraded than the analog stations. and, re: noise level, i have found the quieting of the sony xdr-f1hd to be equally low w/analog signals as w/hd. one analog station i listen to sometimes has a bit of noise on my other analog tunas; it's always dead quiet w/the sony.
if you have a really resolving system and like to listen to fm in the "sweet spot", not for yust casual listening, you can do better w/a tricked out analog tuna than w/the li'l sony; you really need the audio mods or a tube buffer, (or both?), to sit and listen for a while, imo. my stock sony xdr-f1hd w/tube buffer sounds great, and i could easily live w/it as an only tuna, if i weren't a tunaholic, but my analog tunas sound better. however, for casual listening, and/or if you have difficult noisy reception conditions, nothing - even big dollar tunas - will compare to the sony xdr-f1hd, imo. it's cheap enough & small enough that you can run the sony w/mods &/or a buffer alongside your analog tuna of choice, and switch to the sony for those noisier stations.

(tuna presently in rotation - onix bwd-1 w/soap-2 p/s)

some tuna porn:






doug s.,
so much tuna, so little time.
