Description
Brimar UK production of the sixties!
This is a pair ECC82 produced by Brimar in the sixties in the United Kingdom. The tubes have long ribbed grey plates and a very clear inner, see pictures. Very healthy tubes with NOS specs! Tubes with matching systems; see test results. The two tubes are labeled differently: 12AU7 and 12D8. (12D8 is a type designation for a premium selection ECC82). The etching code on the tubes (1571, see pictures) shows that in both cases it concerns the same tube, namely the 12AU7 or the ECC82.
The getter structure of this tube is special. An open ring is closed by the curved end of the getter post. Such that the open ring together with the end of the getter post forms a halo.
Sonics
The overall sound character of British made tubes is warm and lively with a very spacious sound stage. The top end is silky and pleasant and doesn’t get rolled off. They retain a fine sense of “air” at the top, and the upper midrange is smooth and liquid. These tubes reproduce the human voice, especially female voices, with impressive realism. They are also known for a rich bass.With respect to the previous these long plate Brimar ECC82’s are no exception.
Note: if your system is to “warm” already, this tube is not a first choice. ECC82 tubes from Philips, Valvo or Siemens & Halske are to be considered in that situation.
Test method & results
The tubes have been tested carefully with the official Telefunken test set-up and our sophisticated test equipment. Please read our testmethod for the ECC82 tube family. The measurement data below show that both tubes are matched and balanced. And fulfill the factory specs of a new/NOS tube.
| Valve 1
V105 |
Ia (plate current):
Transconductance (Gm): Gas test, Shorts test: |
9,9 / 10,9 mA
2,3 / 2,2 mA/V OK |
= NOS / NOS
= NOS / NOS
|
| Valve 2
V106 |
Ia (plate current):
Transconductance (Gm): Gas test, Shorts test: |
9,7 / 9,6 mA
2,2 / 2,2 mA/V OK |
= NOS / NOS
= NOS / NOS
|
(Telefunken factory specification see test page)
Short description
| Tube type | ECC82 (12AU7 &12D8 print) |
| Quantity of Tubes | One pair |
| Brand | Brimar |
| Manufactured in | UK |
| Dates | 1962 / 1962 |
| Construction | Long ribbed grey plates |
| Getter Construction | Closed ring getter |
| Print Condition | See pictures |
| Box included | White box |
| Equivalent tubes: | 12AU7, ECC802S, CV4003, 12AU7A, E82CC |
| General test results | NOS |
