Home > Pre Tubes >

BRIMAR 13D9 Super 12AT7 ECC81 - Like New 1960s Special Industrial Grade Black Plate ECC81/CV4024/12AT7 Halo Getter BVA STC Prod. ENGLAND -IMPERFECT TEST SCORES
Like New, lightly used Rare 1960s BRIMAR 13D9 Industrial grade with Black Plate and Copper Grid Posts  with BVA logo with IMPERFECT TEST SCORES. 13D9 is a Special Grade Variant of CV4024/ECC81/12AT7 valves. STC Rochester Plant Date Codes.


 
Alternative Views:


List Price: $35.00
Single Tube = $25.00
Sale Price: $25.00
You save $10.00!
Stock Details: Tubes as Shown Available
For Matched Pairs or Quads: Sold only as Singles. No matched pairs.

Quantity in Stock:10
Product Code: 1131-IMP
Qty:

Description Technical Specs
 
Tubes with imperfect test scores from the same lot of item 1131. Twin triodes in these are not tightly matched. Should work fine in many applications.

Lightly used, like new Rare 1960s BRIMAR 13D9
Industrial grade with Black Plate and Copper Grid Posts  with BVA logo. IMPERFECT TEST SCORES. 13D9 is a Special Grade Variant of CV4024/ECC81/12AT7 valves. STC Rochester Plant Date Codes are faint and painted on instead of etching in 13D9, and may not be visible on all tubes. Packed in generic white boxes.

Labels are fragile and not perfect as chalky printing from 1960s comes of easily with contact. In our opinion, 13D9 Brimars are better than 6060/CV4024 that look similar and sonically at par with Brimar CV4033.

Tested and matched on Hickok 752, just recently calibrated and modified by Hickok expert to all Solid State to eliminate drift. However, on average 12AT7 measures lower on this 752 than it should.

For comparison, 12AT7 measuring 4400-4400 on calibrated Hickok 600 measures 3300-3300 mmhos on this 752. Average new 12AT7 on Hickok 600 is 4000 mmhos. In other words, actual test scores are higher than what we have noted on the tube boxes.

Single Tube = $25. Sold only as singles. No matched pairs.

Share your knowledge of this product with other customers... Be the first to write a review

Browse for more products in the same category as this item:

Pre Tubes
Pre Tubes > 12AT7 ECC81 E81CC ECC801S 6201 6060 CV455 CV4024 CV4033 13D9