I've been a long time reader and searcher of the forums. This is my first post. I'm looking for an entry level receiver. In reading the specs for each receiver, I noticed that the Panasonic SA-HE100K (which got a very positive review in Consumer Reports, which I actually trust somewhat, and Sound & Vision mag, which I don't know enough about)lists the following: 100W per channel (40Hz-20kHz, 6 ohms, 0.9% THD). Every other receiver that I have looked at in the same price range: Onkyo, Yamaha, HK -- all list a range of 20Hz-20Khz. The next level up Panasonic, the HE200K, also shows 20Hz to 20Khz in its specs. Is this a deficiency of the Panasonic? Does this mean that the amp cannot reproduce signals below 40Hz while the other receivers can? Does this mean that a sub attached to the Panasonic would be unable to reach below 40Hz? I apologize for my ignorance. Thanks for the help.