Hi-Tec,
I'm running HDTV through the component switches on my Yamaha RX-V1 with no perceivable degradation in the signal. I would hope the Denon 5800 will perform equally as well to the RX-V1. My Denon 5700 (I just sold it) had a component switch, but could not pass HDTV cleanly. In fact, its manual specifically said not to switch HDTV.
I live nearby B&K and have stopped in to talk with those folks and can also tell you that their new 307 will switch component HDTV. So, there is hope. I think your statement may be limited to the first batch of AV receivers with component switching. The second/third generation of these products all seem to be getting with the program.
Regards,
Tom
[This message has been edited by tommyboy2 (edited June 19, 2000).]