I recently tried to exchange the 6550 Sylvania C om my Convergent JL2 with the new exceptional rated (product of the year on HIFI+) KT 88 Diamond by E.A.T. (euroaudioteam): The results is outstanding.... Much more clarity, openess and musicality... simply incredible!
Well they certainly should be incredible for $250 EACH (not matched pair)! It would cost me $2000 to retube my Classic 60 with these, that's more than I paid for it! Talk about your expontential increase in cost for a small improvement.
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