three (3) QUADS SYLVANIA6SN7 GTBthree (3) QUADS SYLVANIA 6SN7 GTB platinum matched   s&h******PLATINUM MATCHED TUBES(WELL BALANCED IN TRANSCONDUCTANCE (gm) AND PLATE CURRENT(Ip). ******TUBES WERE TESTED TWICE,1st) NO SHORTS,NO GAS AND TRANSCONDUCTANCE WHERE 2100/2100 uSIEMENS IS THE A...270.00

three (3) QUADS SYLVANIA 6SN7 GTB platinum matched s&h [Expired]


no longer for sale

******PLATINUM MATCHED TUBES(WELL BALANCED IN TRANSCONDUCTANCE (gm) AND PLATE CURRENT(Ip).

******TUBES WERE TESTED TWICE,1st) NO SHORTS,NO GAS AND TRANSCONDUCTANCE WHERE 2100/2100 uSIEMENS IS THE AVERAGE VALUE FOR 6SN7 USING HICKOK 536 TUBE TESTER & 2nd) AUDIO TESTED NO HUM,VERY LOW NOISE AND NON-MICROPHONIC ON A MODIFIED DYNACO PAS.

******3 X QUADS PLATINUM MATCHED SYLVANIA 6SN7GTB PHONO GRADE TUBES,,US MADE,TIGHT,MEDIUM BASE,VERY CLEAN PINS,SOME HAVE OFF-BRANDED AND SOME HAVE THE PRINT RUB-OFF BUT GUARANTEED SYLVANIA MADE TUBES.FIRST QUAD HAVING,
TUBE1)2900/3000 & 8.0/8.2 ma
TUBE2)3000/3000 & 7.9/8.1 ma
TUBE3)3000/3000 & 8.2/8.5 ma
TUBE4)3050/3100 & 8.2/8.2 ma uSIEMENS AND PLATE CURRENT.PLEASE SEND EMAIL IF LESS THAN THREE QUADS NEEDED AT kablemetal at gmail dot com OR $45.00/PAIR & $90.00/quad.

>>>>>NOTE:Without test data is blindfold buying .LISTING AD THAT SAY'S "test good" OR "test strong" in vacuum tubes is not enough.

******QUESTIONS ARE ALWAYS WELCOME.

****** SHIPPING WITH TRACKING# WITHIN USA.SHIPPING FOR INTERNATIONAL BUYERS IS BY USPS REGISTERED MAIL ONLY.NO PAYPAL FEES.TUBES ARE GUARANTEED FOR 7 DAYS UPON ARRIVAL.

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