Vacuum Tube - 12AX7 / B759, Genalex Gold Lion

Vacuum Tube - 12AX7 / B759, Genalex Gold Lion

Genalex
Pictured: Regular
Pictured: Regular
Pictured: Gold
Pictured: Gold
Customer image:<br/>"A Genalex ECC83 Gold Pin preamp tube along with groove tubes I recently purchased from you for my phase inverter for my Peavey 6505+ head "
Customer image:<br/>"GENALEX GOLD LION D104 MIC PREAMP WITH BASS AND TREBLE CONTROLS, VARIABLE AUDIO COMPRESSION,ECHO,151 ROGER BEEPS AND 1GB DIGITAL VOICE RECORDER"
Customer image:<br/>"GOLD LION ECC83 PREAMP BROOKLIN810"
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Pictured: RegularPictured: Gold
Customer Images:
Customer image: "A Genalex ECC83 Gold Pin preamp tube along with groove tubes I recently purchased from you for my phase inverter for my Peavey 6505+ head "Customer image: "GENALEX GOLD LION D104 MIC PREAMP WITH BASS AND TREBLE CONTROLS, VARIABLE AUDIO COMPRESSION,ECHO,151 ROGER BEEPS AND 1GB DIGITAL VOICE RECORDER"Customer image: "GOLD LION ECC83 PREAMP BROOKLIN810"
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 7th, 2016.
Matt H.
October 7th, 2016
Staff Member
Yes, this tube is comparable will all other 12AX7's and their variants.
Anonymous
March 29th, 2017
These are not tubes designed for Guitar Amps, unless you were looking for the worst guitar sound possible. These are designed for audiophiles, not distorted guitar amps. Designed to NOT distort
Asked by Anonymous on April 11th, 2018.
Matt H.
April 13th, 2018
Staff Member
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 22nd, 2018.
Matt H.
May 23rd, 2018
Staff Member
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.tubesandmore.com/tech-corner/12ax7-comparison-current-made-tubes
Asked by Anonymous on June 8th, 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 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

Product Reviews

4.63 out of 5 based on 8 reviews
- February 9th, 2021
5 out of 5

Sounding great in V1 of my JVM Marshall. Very rich tone!

- October 19th, 2020
5 out of 5

I had some JJ tubes before this and they did sound great in my custom 20 watt version of a hiwatt custom. One of my preamp tubes went out so I ordered these because i'd been wanting to try them but they were too expensive to justify before and holy crap these things are worth it. My amp was loud before and now its really loud and sounds killer! I highly recommend, well worth the extra money. Going to get power tubes soon from them to try out.

- July 29th, 2020
5 out of 5

These tubes sound Great! I replaced all of my 12ax7’s in a Marshall jcm2000 dsl 100 and wow! Either it’s been way to long since I replaced tubes or I’m just a lucky guy?! The latter !
I have matched 6550’s pairs and it sounded so good that I haven’t put power tubes in yet... I’ll roll with the tone as is. Don’t want to mess up a good thing! Throw a few “gold pin” in the mix?

- March 12th, 2020
4 out of 5

Order have been placed, hope get it soon

- July 12th, 2018
5 out of 5

I have been using these tubes in every amp I own. They seem to push the power tubes better than any other I have used (whatever came OEM). They also seem to make the amp sound fuller and richer and more robust as far as I can tell. They also appear to be very durable. I Run my amps with EVERY knob cranked up as far as will go (and then use an attenuator to control the volume). I haven't had one fail yet.

- August 25th, 2017
3 out of 5

I was looking foward to trying this tube out in V1 of an amp (S/E el34 based, 3 preamp stage) that I just built/designed. Unfortunately, it was extremely microphonic and completely unusable in this position; V2 it was great, but I prefer a Mullard in this stage (CF). I'm NOT knocking this product, but in a high gain amp at V1 I'd steer clear. Later positions would be better....lots of gain, good freq. response, but WAY too senitive for my build. Also, guys, if you intend on putting it in a 'normal' plexi, or bassman design, i.e. 2 preamp stages, not 3) this thing might rock! I tend to agree with Blackplates rewiew of this tube...it might REALLY work for you, or REALLY bummed you out. I was bummed... but as I said, I believe it can work well, but in the right position, with the right amp design.
Steve G. Ft.Worth,TX

- April 16th, 2017
5 out of 5

Id like to add one comment to my review...The noise problems these long plate gold lion tubes suffer from could probably be solved if New Sensor would manufacture them with the correct, "star" shaped mica spacers..the ones with the little saw-blade points all the way around them.Look at any/all of your old Mullard, or Telefunken 12AX7 tubes.They all have those kinds of spacers..theres a reason for that..Those spacers distribute the pressure evenly all around the inside of the glass tube and cut down on vibration..Gold lions 12AU7 uses the proper spacers, why cant they put them in the premium 12AX7?

- April 15th, 2017
5 out of 5

A VERY good sounding tube in all the Marshall piggy-back guitar amp heads Ive used them in .Believe it or not, this tube competes with my (real, Blackburn) Mullard long-plate 12AX7 tubes for quality of tone, in those amps. It is the only modern ECC83 type ive found that I can make that claim about. That said, I do not like them in combo amps, because of noise/vibration problems. They do-not work well in my Fender amps, possibly also they don't like to hang upside down .I REALLY really wish new Sensor, or Tube amp doctor or Groove tubes, would put the time and cost into producing an authentic reproduction of EVEN ONE of the great 12AX7 tubes of the past.There are many to choose from..so maybe the Mullard long plate would be too costly..I dont know..But what about the little RCA 7025 ? Or the GE 12AX7 short plate ? How about the Tungsram 12AX7? I would gladly pay $40 or $50 each If someone could put those tubes back into production...