Description
This extremely rare version Mazda12AU7A tube is made in 1964 by CIFTE in France.
Many french tubes were available from Compagnie Industrielle Française des Tubes Electroniques (CIFTE) under their Mazda-Belvu brand (originating from Societé Radio Belvu.
This ECC82 has a caracteristic open design; see pictures. The tube has a halo getter and grey plates with a rectangular holy through which the gris is visible. The tube date code is 6425; so manufactured in the 25th week of 1964. The tube measures new and shows no signs of use; it is most likely never used.
Sonics
The sonic properties of the Mazda 12AU7A is described as: “These tubes give wonderful imaging, sparkle, dynamic, organic and open sound with a holographic 3D-soundstage”.
The tube is thoroughly tested. Both tubes match the factory specifications very well. See test results in the section below.
Test results
Test methods and test conditions are outline on the tube testing page.
The measurement data below illustrate that the tube is in good till excellent condition.
| Valve 1
V283 |
Ia (plate current):
Transconductance (Gm): Gas test, Shorts test: |
10,5 /10,4 mA
2,1 /2,0 mA/V OK |
= NOS / NOS
= NOS / NOS
|
(Telefunken factory specification see test page)
Summarized description
| Tube type | 12AU7A/ECC82 |
| Quantity of Tubes | One tube |
| Brand | Mazda |
| Manufactured by | CIFTE, France |
| Date code | 6425 AUA |
| Plate Construction | Grey plates with rectangular hole |
| Getter Construction | Halo getter |
| Print Condition | See pictures |
| Box included | Generic Mazda box |
| Equivalent tubes: | 12AU7, ECC802S, ECC82, 13D8 , CV4003, CV491, 5814 , 7730, 5963 |
| General test results | NOS |
Please read our test and shipping policy before buying also !
