Vacuum Tube - 12AX7 / B759, Genalex Gold Lion

Genalex
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Vacuum Tube - 12AX7 / B759, Genalex Gold Lion

Starting at: $24.75
In Stock

Genalex Gold Lion ECC83/B759 (12AX7) dual triode preamp tube with gold pins. Original Genalex Gold Lion ECC83/B759 tubes are considered among the best 12AX7 types ever made. They are hard to find and when they are available, they are expensive. They exhibit a large detailed soundstage that is sought after by discerning audiophiles who demand the highest quality sound. The reissue Genalex Gold Lion ECC83/B759 recreates the sound signature of the original. This tube features balanced sections and gold plated pins.

SKU:
T-12AX7-X-GEN
Item ID:
039540
Brand:
Genalex
Part Numbers
Pin TypeOur Part NumberUPC/EAN
RegularT-12AX7-GEN
GoldT-12AX7-GOLD-GEN841358101779
Product Measurements by Type
Amplification Factor85 - 115
Capacitance, Cathode to Heater5.0 pF
Capacitance, Plate to Plate0.6 pF
Capacitance, input1.6 pF
Capacitance, output0.46 pF
Cathode to Heater Voltage200 V
Grid Circuit Resistance (Rg), Automatic Bias2.2 MΩ
Grid Circuit Resistance (Rg), Fixed Bias1.2 MΩ
Grid Reverse Current0.2 μA
Heater Current135 mA - 275 mA
Heater Voltage6.0 - 6.6 V / 12.0 - 13.2 V
Plate Current (Ia)9 mA
Plate Dissipation, per triode (Wa)1.2 W
Plate Voltage (Ua)330 V
Structure-borne Noise3.5 mv
Transconductance (S)≥ 1.4 mA/V
Packaging Information
Packaging Dimensions2.75 in. × 1 in. × 1 in.
Weight (Packaging)Gold versionT-12AX7-GOLD-GEN0.036 lbs.
Regular versionT-12AX7-GEN0.034 lbs.
Product Measurements by Item
T-12AX7-GEN - Regular versionAmplification Factor85 - 115
Capacitance, Cathode to Heater5.0 pF
Capacitance, Plate to Plate0.6 pF
Capacitance, input1.6 pF
Capacitance, output0.46 pF
Cathode to Heater Voltage200 V
Grid Circuit Resistance (Rg), Automatic Bias2.2 MΩ
Grid Circuit Resistance (Rg), Fixed Bias1.2 MΩ
Grid Reverse Current0.2 μA
Heater Current135 mA - 275 mA
Heater Voltage6.0 - 6.6 V / 12.0 - 13.2 V
Plate Current (Ia)9 mA
Plate Dissipation, per triode (Wa)1.2 W
Plate Voltage (Ua)330 V
Structure-borne Noise3.5 mv
Transconductance (S)≥ 1.4 mA/V
T-12AX7-GOLD-GEN - Gold versionAmplification Factor85 - 115
Capacitance, Cathode to Heater5.0 pF
Capacitance, Plate to Plate0.6 pF
Capacitance, input1.6 pF
Capacitance, output0.46 pF
Cathode to Heater Voltage200 V
Grid Circuit Resistance (Rg), Automatic Bias2.2 MΩ
Grid Circuit Resistance (Rg), Fixed Bias1.2 MΩ
Grid Reverse Current0.2 μA
Heater Current135 mA - 275 mA
Heater Voltage6.0 - 6.6 V / 12.0 - 13.2 V
Plate Current (Ia)9 mA
Plate Dissipation, per triode (Wa)1.2 W
Plate Voltage (Ua)330 V
Structure-borne Noise3.5 mv
Transconductance (S)≥ 1.4 mA/V

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet1.25 MB

Questions and Answers

Click each question to see its answers.
Asked by Anonymous on October 6th, 2016.
Matt H
October 7th, 2016
Yes, this tube is comparable will all other 12AX7's and their variants.
Asked by Anonymous on October 7th, 2016.
Matt H
October 7th, 2016
These tubes do have balanced triodes but we can not match them to each other. You can call us directly at 480-820-5411 and we can get a quote for a bulk discount.
Asked by Anonymous on April 13th, 2018.
Matt H
April 13th, 2018
This is a very high gain preamp tube and if that is what you are going for then this is an excellent choice.
Asked by Anonymous on May 23rd, 2018.
Matt H
May 23rd, 2018
If your amp calls for a 12AX7 and you are looking for a tube with a lot of gain then this would be an excellent choice. Check out our 12AX7 comparisons here: https://www.amplifiedparts.com/tech-corner/12ax7-comparison-current-made-tubes
Asked by Anonymous on June 5th, 2018.
BradWbr
June 8th, 2018
Staff Member
Tube choices are highly subjective and have many variables (What type of guitar being used, the genre of music, your personal playing habits, etc) so we encourage you to check out our comparisons of 12AX7s and 6L6 tubes. https://www.amplifiedparts.com/tech-corner/12ax7-comparison-current-made-tubes https://www.amplifiedparts.com/tech-corner/6l6gc-comparison-current-made-tubes
Asked by Anonymous on August 21st, 2018.
BradWbr
August 22nd, 2018
Staff Member
Tube choices are highly subjective and have many variables (What type of guitar being used, the genre of music, your personal playing habits, etc) so we encourage you to check out our comparisons of 12AX7s and 6L6 tubes. https://www.amplifiedparts.com/tech-corner/12ax7-comparison-current-made-tubes
Asked by Anonymous on September 12th, 2018.
BradWbr
September 12th, 2018
Staff Member
Since both of your amps call for a 12AX7, it will certainly work. If you are looking for a tube that can produce a lot of gain then this would be an excellent choice. Check out our 12AX7 comparisons here: https://www.tubesandmore.com/tech-corner/12ax7-comparison-current-made-tubes
Asked by Anonymous on April 10th, 2019.
BradWbr
April 10th, 2019
Staff Member
If the Saturn Signature uses 12AX7 tubes, these will work as replacements.
Asked by Anonymous on May 27th, 2019.
BradWbr
May 30th, 2019
Staff Member
This would certainly work in any preamp position on your amplifier. Please see the 12AX7 Comparison of Current Made Tubes chart for the tonal characteristics of this particular tube. https://www.amplifiedparts.com/tech-corner/12ax7-comparison-current-made-tubes
Asked by Anonymous on August 4th, 2019.
BradWbr
August 6th, 2019
Staff Member
Yes, these can be used in place of any 12AX7 tube.
Asked by Anonymous on November 25th, 2019.
Clark Roberson
November 26th, 2019
Staff Member
This is a standard sized 12AX7 tube and will fit any 12AX7 position.
Asked by Anonymous on April 24th, 2020.
BradWbr
April 24th, 2020
Staff Member
Yes, that is the only difference.
Asked by Anonymous on April 29th, 2020.
BradWbr
April 30th, 2020
Staff Member
The answer to that is subjective in nature and our picks may not be your favorite. With this in mind, we developed the 12AX7 Comparison of Current Made Tubes chart to help navigate the different options from the many available. https://www.amplifiedparts.com/tech-corner/12ax7-comparison-current-made-tubes

Product Reviews

5.00 out of 5 based on 2 reviews
- January 16th, 2020
5 out of 5

I like it. It has a bit of personality around the edges and a good amount of gain. Makes my strat sound stratty. I'm not audiophile enough to quantify it more than that and it all comes with a grain of salt.

I'm using it in a homemade Fender Champ type circuit with a 6L6 power tube. I like this tube better than the other preamp tubes I have tried in this amp : JJ (bright and brittle), EH (round and maybe dull - but I love them in my Vox) and Mullard (nice clean, not overly harmonic).

Note that the desc says Made in Russia, but the tube is stamped Made in China. This is the standard pin tube.

- May 28th, 2017
5 out of 5

I just love these tubes !!!
These are some of the best tubes out there today.. The natural sustain that comes out of these tubes is unbelievable... I put these in my 100 watt Plexi and the sound is in a word AWESOME ! I ordered more for my 50 watt Plexi. They are pricy, But you get what you pay for. I will stock up on these tubes.