Most Hi Fi nuts, myself included, always upgrade to the latest and greatest preamps. (or speakers or amps or whatever) Krell has decided to completely redesign their KAV line. That includes the HTS and all of the KAV amps. More important, the HTS now has several new features to go along with the new look, including an analog bypass. So, yes, everyone is running to dump their "old" HTS's to upgrade to the "new" HTS's. One more thing, ALL of the KAV amps are being discontinued..ALL! That includes the 150, 250, 250a/3, and the 1500. They are not being redesigned, they are being dropped, so you will also see alot of these amps going as well. They are making a new 5 channel HT amp only with more models to come later this year. So it's gonna be 1 5 channel HT amp and all of the other amps will be FPB. Hence the quick rush to sell.