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Radio Technique / ECC82/6189/12AU7WA-RADIO TECHNIQUE LADDER PLATE MATCHED PAIR
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A test report is available click here to view
Original Special Quality 6189 ECC82 Radio Technique valves which date from the early mid 1960s and were long life valves made by Radio Technique for French military.
Full 12AU7WA/6189W specification with Grey ribbed Full Ladder anode plate, internal supports with cross swords marking. The 6189W/ECC82 was a special military grade valve that was used in aero Avionics and industrial communications equipment.
These valves were made with the highest grade materials and with no compromise on selection or quality control. These valves have a number of unique features such as high grade filament isolation so even after long periods of use the filament will not degrade. Immune to shock and vibration and were also rated for long life. To put it simply, No modern day ECC82 is made to this specification.
R.T or Radio Technique was part of the Philips group and these were made with the best materials with very tight tolerances. These are great audio valves as they are very well balanced with great detail and Mullard style finesse.
All our audio customers have really rated these over the years as they provide a warm, detailed and neutral sound. In audio circuits the valves have a very clear bass response, which is both tight and musical. The sound has even detail across the audio spectrum. treble is clear and smooth. The sound quality is not equaled by any modern day valve.
Those of you who know me know that in Primaluna and other high end audio applications this is my favourite ECC82.
We offer these in Specially Selected Balanced triode sections in matched pairs. For use in High grade Audio Phono and Pre Stages.
All balanced and matched preamp valves are Dynamically Drive tested under real working condition and are matched on dB gain. They also have passed the following tests:
Gain (db) Drive Tested
Transconductance (gm) Drive Tested
Output Drive Tested
Noise 1 (signal to noise)
Noise 2 (Aural)
Microphonics Test 1(Ambient)
Microphonic Test 2 (Shock)
Cathode Test
Grid Leakage Test
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