I heard from Mr. Slone's distributor that his mother has had some health problems that has been occupying some portion of his time. He has a distributor now that is selling his kits. I plan to purchase one of the kits probably around November. I have too many business trips and a vacation coming up to get it any sooner. The distributor also told me that Seal Electronics will be coming out with a preamp. With all of the consumer research I have been doing recently, I am convinced that he has one of the best amplifier designs available. Mr. Slone has written some oustanding books on electronics and amplifier design. Highly recommended.