Khrys, the revision you spoke of would lead one to believe this is a product going through some evolution. The Wolcott's design is essentially unchanged, the revision is a selector switch on the rear that will allow these amps to be used with a larger variety of speakers. This feature is minor, and can be added to older amps, often by the owner. The only other revision is the OPTION of a new wide band transformer. This was developed specifically for the Soundlab speakers, as their impedance in the extreme top (@ 22K HZ) is 2.6 ohms. This is NOT a revision, the amps are still available with the original transformer, and the new wide band is an option, for an additional cost of $500.00. I might add, unless you and/or you dealer have listened to the Wolcott for at least 250 hours, you have not really heard it at it's best. The changes mine have gone through are amazing, and they are still breaking in. Tubes are absolutely critical to the performance of this amp, and I am still surprised at the changes that are occurring as I test with various tube combinations. One last thing, you did not say what other amps you and your dealer are comparing these to. I have compared my Wolcotts to many other amps, and there are not many that are even in this price range. The Wolcott is only $8495.00 retail. The Atmasphere MA2 MK11, the VTL 700, the Viva Aurora, Tube Research GT400, and others are all below, equal, or slightly better in performance to the Wolcott's, depending on your speaker and your opinion. All these I mention are from $20,000 to $32,500.00. From two and a half times, to nearly quadruple the price, certainly something to consider when making comparisons.