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NOS Matched Quad (4) National Union NU JAN-CNU-7193 Black Plate Vacuum Tubes

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Product Description

NOS fully tested and matched quad of National Union / NU JAN-CNU-7193 vacuum tubes. Military Spec. Black Plates, Support Rods. These do not include boxes as they came bulk packed. PLEASE NOTE - MANY OF THESE HAVE CRACKED BASES. We cracked a few just in testing them, for some reason the bases on these were brittle. This will not affect the sound or operation of the tubes in any way and is purely a cosmetic issue. 

* Quads are available - please order a quantity of "2" for a quad - make sure to email us first to check if the quantity in stock is less than 4 *

Tested and matched within 10% or less on a calibrated Hickok TV-7D/U. Fully guaranteed against any defects including noise or microphonics.

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