48 Hour Burn in and Amplitrex AT-1000 computer controlled match.
This listing is for (2) brand new, factory fresh burned in GOLD LION ECC83/B759 (12AX7) with gold pins as a Amplitrex AT-10000 matched pair. Tubes are burned in for 48 hours and matched for gm to 10%. This is a world class 12AX7, in the tradition of GENALEX GOLD LION. Notice the long plates. Manufactured in the high end factory of New Sensor Corp., a world class tube manufacturer. This tube is part of the GENALEX GOLD LION series of tubes. Tight quality control. We can attest to that by our measurement results and listening tests. We tried these in Manley and VTL pre-amplifiers/Amplifiers and the amplifiers measured better and sounded better and quieter.
NO SNAKE OIL TREATMENTS HERE. STAY AWAY FROM THAT STUFF UNLESS YOU WANT YOUT TUBE GEAR TO SOUND LIKE 1970s TRANSISTOR GEAR!
This world class tube is a well constructed ECC83. They test consistently with high gm readings, low noise and microphonics. A perfect phono preamp or phase splitter tube, or any amplifier requiring a low noise 12AX7/ECC83.
Here is a description from the New Sensor Website:
"The original Genalex Gold Lion ECC83/B759 is one of the most rare 12AX7 types ever made. This tube featured superb linearity, balanced sections, and extremely low noise. The reissue Genalex Gold Lion ECC83/B759 features gold plated pins and has been carefully engineered to recreate all of the attributes of the original. This tube is a premium replacement for all 12AX7, ECC83 tubes.
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