I believe it was the KBL, KPA era. Line stage and seperate phono stage. I had the KPA or else the cheaper KPE phono. Too long ago to remember but it was big, heavy and had complex loading capability.
According to the Audiogon Blue Book the 150, 250 , KBL and KPA all came out in 1990, the KRC-HR in 1997. I agree that later Krells are better, it took quite a while for the preamps to catch up with the amps.
You must have a verified phone number and physical address in order to post in the Audiogon Forums. Please return to Audiogon.com and complete this step. If you have any questions please contact Support.