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RE: Music Reference RM9mkII Driver Tubes

Posted by Berrell88 on August 26, 2020 at 13:55:45:
Re the NOS or more correctly old stock in most application, I share your skepticism.A matched pair of Sylvania chrome top 6sn7's acquired from Tube guru Brent Jessee in 10/2016 and not overused in my Cary preamp, are now unpleasantly noisy with gobs of tube rush. And this is going through a Class D stereo amp which is nearly dead quiet.