Rare 60's very nice BRIMAR ecc83 12ax7 UK made Ediswan label very strong fully tested first quality tube as Mullard best tube preamp for Hiwatt Orange, Marshall Vox

Here for sale a very nice, very strong  Brimar ecc83 12ax7 UK made. It has the Ediswan label. This tube is in perfect condition.
Fully tested. All tests, including for sound, noise floor and microphonyare excellent. V1 grade.

Really great sounding tube !

  Tests results   117 %   112 %

Well over full new specs. Such a tube should last for a very long time.

Top condition.

Very nice getter flash and the fragile label is pretty nice.

These Brimar are excellent and stunning sounding tubes, no doubt as good as vintage Mullard , a little more linear, very warm and sweet with very definite and generous low end, superb mids and beautiful harmonics.  They crunch and drive as a dream also...                                                                

      ... Really beautiful large, open and airy sound ... superb musicality.

No surprise they were found stock from factory in many Vintage Vox.

More linear in term of frequency response than Mullard, with wider dynamic range, they are outstanding tubes for the best studio recording gear ( mastering devices included) and high end hifi system.

An other pure British jewel.
Let your Marshall, Orange, Hiwatt, Vox or any nice amp get its full original tone . Hear and feel the difference. Supplied in new white box.

I COMBINE SHIPPING ,

 SO PLEASE HAVE A LOOK AT MY OTHER INTEMS AND SAVE .

This tube has been tested for
Heater filament test: Short circuit
Heater filament test: Open circuit
Heater filament test: Tolerance check
Heater cathode insulation: Leakage
Heater cathode insulation: Short Circuit
Tests for heater current abnormalities
Amplification factor
Voltage gain
Power gain
Screen grid test
Mutual conductance test
Dual test for double triodes
Emission
Inter electrode leakage
Inter electrode short circuit
Flash-over (arc detection, high voltage breakdown)
Gas ionisation test with a first tester
and then with a second tester ( Jackson 648S ) for
Filament Circuit Shorts Plate Life test...

The Jackson 648. It is definitely one of my favorite tube testers. While it does not employ a mutual conductance test circuit, it does use an advanced emission circuit that applies separate element voltages to each tube element, and separate load circuits are also used. “These voltages and loads have been carefully selected for each tube to meet most ideally the normal operating condition of the tube.” (Source: 1950 Jackson catalog.)

In my experience, the Jackson circuitry is very effective, and often will surprise you with accuracy that approaches Hickok’s coveted “mutual conductance” test method. ( Source tubesound web site.)

I do my best to test and describe the tubes the best I can. Note that test results may vary from one tester to an other so this must be taken as an indication, although my Jackson is regulary tested for calibration.  Photos are part of the description you get what you see.