Matched, Tested & Guaranteed Vacuum Tubes
All tubes are guaranteed to be 100% as described or your money back. All tubes have been tested for mutual transconductance, shorts, leaks, gas and noise on my calibrated Hickok TV-7/U.
Any pair of quad described as matched means that the tubes will have the same exact construction and will test within a close range of each other for Mutual Transconductance. The last criteria is date codes, which I do match when possible.
Number of Tubes:
Plate Construction: Grey ribbed
Getter Construction:Top O
Visible Date Codes:293 a88
Mutual Trans Test Data: 2800/3600 where the minimum good reading is 2470/2600 and the New Old Stock (NOS) reading is 3800/4000.
Find Similar Products by Category
This product hasn't received any reviews yet. Be the first to review this product!