Beautiful NOS RFT EL34 6CA7 early SHORT BASE model !!! perfectly matched pair great Mullard substitute Orange Hiwatt Marshall

Here is a beautiful matched pair of NOS super rare early short base model RFT EL34 6AC7.

Highly sought after best RFT el34 version.

Super strong and perfectly matched !!!  Fully tested, no issue.
Made in East Germany by RFT very robust and reliable construction with its typical "dimple glass top"

Superb sounding tubes, rich warm vintage tone, some people say as good as Mullard.
test results  

tube 1   101 %

tube 2   102 %

                   Note these RFT el34 usually gives a test results between 92 % and 102 % for a new tube, so we are perfectly in the best of usual reading for a full specs new tube set.

Splendid large shinny and mirror like getter flashes on the 2 tubes                    
And also have a VERY strong life test when with lower voltage applied on heater on Jackson 648 !!

Sold as new or very few use.

Very nice and strong construction. Perfect for Orange Marshall and especially vintage Hiwatt or any amps with a  non adjustable bias which was calibrated for vintage Mullard and all other old robust production.

Actual production tubes often don't last very long compared to golden age tubes...

Hear and feel the difference of true vintage tubes.

 I COMBINE SHIPPING ,  SO PLEASE HAVE A LOOK AT MY OTHER INTEMS AND SAVE .
             

These tubes 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 regulary tested for calibration.

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

Private sale so no guarantee or return please.

But if any problem (never happened yet ) please contact me first.

Thank you for your interest.