Raytheon 6K8 Vacuum Tube NOS NIB PCF80 Gebraucht This perfectly-matched pair of new

This perfectly-matched pair of new old stock

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I am playing it it in my Bottlehead Crack headphone amplifier as I write and it sounds great

This lot of four new old stock

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Raytheon 6K8 Vacuum Tube NOS NIB PCF80 Gebraucht This perfectly-matched pair of newThis new old stock, new in box Raytheon 6K8 tested to spec on our Paul Hart calibrated TV7 U. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS. 1. MOST OF THE TUBES WE SELL ARE OVER 70 YEARS OLD. WE CANNOT GUARANTEE FOR FAILURES AFTER POWER UP AS THERE IS NO WAY TO DETERMINE HOW