Home > Pre Tubes >

BRIMAR CV4033 - MINT NOS 1960-62 Military Black Plate Prem. Grade Long Life ECC81/CV4024/12AT7 Halo Getter STC Prod ENGLAND Factory Tested (Plug&Play Ready to Use) - SLIM BASE FOR COLLARS - IMPERFECT SCORES
Brand New MINT NOS Rare 1960-62 - BRIMAR CV4033 Black Plate with Copper Grid Post Military tubes. Factory tested and serialized*. CV4033 Flying Lead is a PremGrade, High Reliability Long Life version of CV4024/ECC81/12AT7 STC Rochester Plant England SLIMP


 
Alternative Views:


List Price: $45.00
Single Tube = $30.00
Sale Price: $30.00
You save $15.00!
Stock Details: Tubes as Shown Available
For Matched Pairs or Quads: Sold as Single Tubes. No matched pairs.

Quantity in Stock:8
Product Code: 2042M-SL-IMPSC
Qty:

Description Technical Specs
 
NOTE: After spending $$$$ on tooling and various prototypes, we have fitted Special Grade Flying Leads tubes with Custom Bakelite Bases developed in-house. It is a multi-step, labor intensive process. Each lead is straightened and cleaned to ensure perfect fusion with the base pins in the soldering bath. Process is painstakingly slow, so we will be adding a few tubes at a time to the inventory.

Tubes are Plug & Play, Ready to Use,  fitted with our Custom made Bakelite Bases (INTL Patent Application in Process).

TUBE BASE ON THESE IS SLIMMER, SO THAT IT WOULD WORK WITH SOCKETS WITH COLLARS IN ADDITION TO ALL REGULAR SOCKETS.

Brand New MINT NOS Rare 1960-62 BRIMAR CV4033 Black Plate with Copper Grid Post Military tubes with imperfect scores* issues. 

*test scores on these tubes are not perfect. Two triodes are over 25% apart. Not an issue with many applications.

Factory tested and serialized*.  CV4033 Flying Lead is a Premium Grade, High Reliability Long Life version of CV4024/ECC81/12AT7 valves (Click Here). CV4033 premium grade version of the 1960s Black Plate CV4024/6060 is one of the best from Brimar in the ECC81 types. STC Rochester Plant Date Codes. Made in England. Packed in generic white boxes from bulk.

*From 100 pc bulk boxes, each tube came with two factory stickers (click Larger Photo). A hand written individual serial number on top, and a printed sticker with numbers R811451 PM25525-1 on the side. Tubes were factory tested and serialized for some qualification (R811451 PM25525-1), except we don't have specific details of the qualification.

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 = $30. Sold as singles.

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
PREMIUM Tubes > PREM. 12AT7 ECC81 E81CC ECC801S 6201 6060 CV455 CV4024 CV4033
Prem Tubes (MULLARD-BRIMAR-GENALEX) F/Leads Plug&Play
Prem Tubes (MULLARD-BRIMAR-GENALEX) F/Leads Plug&Play > Flying Leads Plug&Play CV4033 - Premium 12AT7 ECC81 E81CC ECC801S 6201 6060 CV455 CV4024 type.
PREMIUM Tubes