Thanks for your comments James, I understand your concerns, however, would it not be possible to register the item with Bryston when first purchased to validate the warranty, this record could then be used as the reference for repairs during the 20 years, rather than having to keep track of a receipt.
I fear that the policy you have adopted is going to damage the resale market for Bryston products, neither of the 2 items that I purchased have receipts, to the best of my knowledge I bought them from legitimate original owners, fortunately both have date codes prior to the warranty change. If I was considering a purchase now and knew there would be no warranty because of a missing receipt I think the "edge" Bryston used equipment enjoys would be eroded.
I did not go the used route to screw my local dealer, whom I have dealt with for 25 years, new equipment is simply out of my price range, my dealer knows what I have purchased and the reason why, I still have an excellent relationship with them.
Before I decided on Bryston I read many articles addressing the "best amp. to buy" question, usually a short list of 6 or 8 manufacturers was given in reply, Bryston always included, the big "edge" always noted about Bryston was the warranty 20 years fully transferable, of course that still exists however, I feel your policy change has diminished this advantage.
Regards
Bob
PS. love the pre \ amp