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NOS Westinghouse 6U8A / 6678 Preamp Vacuum Audio Tubes w Boxes
Description : 01 Jun, 2023
Two sleeved sets including 10 1961 Westinghouse 6678 / 6U8A preamp triode pentode audio tubes, all test NOS, all 10 are date code matched, all are in original boxes. Very rare set. $335 or best offer. Very clear, detailed, warm sound; the 6678 is an upgrade to the 6U8A. All 10 tubes have the '126' (26th week of 1961) code on the glass. It's very rare to see these tubes with three distinct sets of overlaid labels on the glass - see the pictures. All tested in NOS range on calibrated BK 747, with results as: • Remaining Life - all pass test, • Shorts - none, all pass test, • Grid emissions - all pass test, • Test 1 - all 10 tubes test greater than 120 (where 68 is minimum), • Test 2 - 8 tubes test greater than 120, two tubes test at 112 (where 68 is minimum). All pictures, including the test results, are of these Westinghouse tubes. All 10 are labeled on the glass with 'Westinghouse' and '126' in yellow text, and with '6678 / 6U8A U.S.A.' in white text. All have the same yellow 'Westinghouse 126' and white '6678 / 6U8A U.S.A.' logo text. All boxes and sleeves are in very good crisp condition, boxes measure 3 inches tall, and all 10 have the 'Westinghouse' and '6678 6U8A' and 'U.S.A.' label on the top end flap. All 10 boxes are labeled 'C3' and '1234' on the bottom end underflap. Boxes and sleeves are all bilingual (English on one side and French on another side). This tube set came from a pany's reserve stock department, and a one-page detailed written provenance is included. See our other sale items for more tubes. Will deliver in Regina area, curbside pickup available, tracked shipping in double boxes available with tube boxes packed separate from tubes.
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