Loading... Please wait...
  • In Box Matched Pair RCA USA 12AT6 [HBC90] Smooth Plate [] Get Vacuum Tubes 82%

In Box Matched Pair RCA USA 12AT6 [HBC90] Smooth Plate [] Get Vacuum Tubes 82%

Ships in 1 business day or less.
Calculated at checkout
Current Stock:
Out of stock

Sorry but this item is currently unavailable.

Please check back at a later stage.

Product Description

Tube Type / Number: 12AT6 [HBC90]
Actual Brand*: RCA
Printed Brand: RCA
Quantity of Tubes: Matched Pair
Plate Construction: Silver/Black Smooth
Getter Construction: Top []
Country of Manufacture: USA
Visible Date Codes: 6-52 & 7-52
Lettering Condition: 75 Percent
Year Made:
Mica Spacers: 2
Smoked Glass? No
Engraved Base? No
Boxes Included? 2 Boxes - ONE Original, ONE NOT Original

Gm Test Results: 40/45/54 & 45/66/52

Minimum Good Value: 30/40/40
NOS Test Value: 49/45/45
Life Calculation: 82% & 92% (where 65% = fail)

Tests as NOS?: No
True NOS?*: No

** 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.

Find Similar Products by Category

Product Reviews

This product hasn't received any reviews yet. Be the first to review this product!

Write your own product review

Recent Updates