So I can pick this up for $1800 from a reputable dealer in NYC. I don't know the history too well but the guy said they were made originally in a very limited quantity, then discontinued until recently at which time different opamps were used. He also said he can hardly hear a difference. This is a damn good deal I'm sure and I'm going to rent it for a day to check it out then most likely buy it. I would appreciate any info on the history of these pieces. Thanks

Josh