RCA
Hi-Fi Audio NOS NIB Date Matched Pair RCA 6X4 [] Dimple Foil Strip Vacuum Tubes
- SKU:
- PH0317
- UPC:
- RCA 6X4
- MPN:
- RCA 6X4
- Availability:
- Ships in 1 business day or less.
- Shipping:
- Calculated at Checkout
Description
Tube Type / Number: 6X4 [EZ90]
Actual Brand*: RCA
Printed Brand: RCA
Quantity of Tubes: Date Matched Pair
Plate Construction: Black
Getter Construction: Top [] Dimple Foil Strip
Country of Manufacture: USA
Visible Date Codes: MO
Lettering Condition: 90 Percent
Year Made:
Number of Mica Spacers: 2
Mica Shape: Saw
Smoked Glass? Clear
Engraved Base? No
Boxes Included? Multiple Boxes - SOME Original, Some Generic
Notes:
Gm Test Results: 50/52 & 50/52
Minimum Good Value: 40/40
NOS Test Value: 50/50
Life Calculation: 100+% (where 65% = fail)
Tests as NOS?: Yes
True NOS?*: Yes
** Please note, many tubes will test NOS but will actually have a few hours of use on them. A truly NOS tube will have excellent getter flashing condition, no dirt/grime, usually in the original box, and no filament deposits. If a tube is listed as "tests NOS" but is listed as "not True NOS" please expect the tube to have a small amount of use *
All tubes have been tested using only the best tube testers. We have a large fleet of tube testers, and every single one of them has been calibrated within the last year by industry experts. We mainly use the Hickok TV-7D/U, but occasionally we may use a Hickok 539, 533A, or 600A.