CBS USA 6AC7 Metal Vacuum Tube 90%

(No reviews yet) Write a Review
Ships in 1 business day or less.
Calculated at Checkout
On Sale
Now: $1.01
Was: $2.01


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.

Actual Brand: CBS
Printed Brand: CBS
Type: 6AC7 [6J4]
Number of Tubes: Single
Plate Construction: Metal
Getter Construction: Metal
Country: USA
Visible Date Codes: 6043
Lettering Condition: Average
Box Included: 1 Box-Original
Tests NOS: No
Actual NOS (Some Tubes Test NOS but have a few hours on them): No
Mutual Transconductance (Gm) Test Data: 44 where the minimum good value is 30 and the New Old Stock (NOS) value is 49 or 0.9 of what a new tube should test


View AllClose

Additional Information

Item Type:
Vacuum Tubes
Production Era:
Vintage & NOS
View AllClose