Perfect NOS NIB "INDIAN MULLARD" BEL ecc83 12AX7 WA matched pair SAME CODE ! Made in India EXTRA STRONG Great preamp tubes, Orange Hiwatt Marshall

Hi, I'm happy to propose you for sale a superb and perfect NOS NIB Bel ecc83 12ax7 WA matched pair with same code , from same batch. These are the 12ax7XA special quality for Military use also called the Indian Mullard. They were made in India in Bel factory, Bangalore in colaboration with Mullard and made with Mullard -Philips tooling, technology and engineering. Same identical construction, component material as the British Mullard. Excellent sounding tube for less money.
Tests results :

Tube 1 120 %   122 %

Tube 2 122 % 125 %

Tightly matched within 5 % which is excellent for stereo use.

They are well over full new specs.

In term of sound they are close to the British Mullard but a bit brighter, more "air".

Printings are perfect as well as factory codes.
The tubes are new, perfect top condition and provided with original boxe.

tested for sound, noise and microphony with very good results.

 Mega strong, well balanced and matched.

Excellent tubes for high end Hifi with warm sound super lively mid and very detailed high end.

An absolutely excellent choice your favorite bass or guitar amp too.

Rare opportunity to get such a nice specimen of same code , matched pair of these Indian Mullard  .

Let your Marshall, Orange, Hiwatt or whatever get its full original tone . Hear and feel the difference.

I COMBINE SHIPPING ,

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

Shipping cost includes tracking and insurance.

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

Leakage

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 regularly tested for calibration.

 Photos are part of the description you get what you see.

Thank you for your interest.