Vacuum Tube - 12AT7 / B739, Genalex Gold Lion, Gold Pin

Vacuum Tube - 12AT7 / B739, Genalex Gold Lion, Gold Pin

Genalex
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$62.35
In Stock
Quantity in stock: 65

Genalex Gold Lion ECC81/B739 (12AT7) dual triode preamp tube with gold pins. Made in Russia. Original Genalex Gold Lion ECC81/B739 tubes are considered the best 12AT7 types ever made. They are also among the rarest types available. They exhibit a large detailed soundstage that is characterized by an expressive midrange, deep tight bass, and a smooth extended high end. The reissue Genalex Gold Lion ECC81/B739 recreates the sound signature of the original. This tube features balanced sections and gold plated pins.

SKU:
T-12AT7-GOLD-GEN
Item ID:
039534
UPC/EAN:
841358101687
Brand:
Genalex
Amplification Factor≥ 50
Capacitance, Transfer1.6 pF
Capacitance, input2.5 pF
Capacitance, output0.4 pF
Cathode to Heater Voltage200 V
Grid Circuit Resistance (Rg), Automatic Bias1 MΩ
Grid Circuit Resistance (Rg), Fixed Bias0.25 MΩ
Grid Reverse Current0.5 μA
Heater Current165 mA - 330 mA
Heater Voltage6.0 - 6.6 V / 12.0 - 13.2 V
Plate Current (Ia)18 mA
Plate Dissipation, per triode (Wa)3.25 W
Plate Voltage (Ua)330 V
Transconductance (S)≥ 4.5 mA/V
Packaging Information
Packaging Dimensions2.75 in. × 1 in. × 1 in.
Weight (Packaging)0.0353 lbs.

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet1.88 MB
Questions? Contact us at [email protected], or give us a call at 480-820-5411

Product Reviews

5.00 out of 5 based on 3 reviews
Keith Holley - September 17th, 2023
5 out of 5

SO far-I have yet to be disappointed by the Gold Lion small signal tubes. Thye have a robust, addictive sound to them that simply can't be beat IMHO. I have been burned too many times with NOS going south-weak/noisy. They are old tubes to begin with. Frankly they were not designed to be at peak audio reproduction performance 60/70+ year later. Thats why IMHO having Gold Lion step up with these new production small signal tubes is such a big deal!!

Keith Holley - September 17th, 2023
5 out of 5

These are awesome tubes. Clean/clear with warmth and dynamics. I use them in place of the stock JJ's in a Van ALstine CF RB preamp. I love JJ's but these are a step up for me. I know tube brands can be subjective-but I have rarely read bad things about these GL models-the small signal GL's. They do have a lot of NOS qualities, and it's easy to hear they choose to emphasize the ones that make people gravitate toward tube hifi. I love the Psvane Classic I retubed my Prologue 4 and 5 with-but I may end up with GL's in there too!! AES makes it easy-and awesome prices!!

mps - July 13th, 2023
5 out of 5

I rarely write reviews, but thought I would post. I have a fender clone ab763 (custom Vintage Sound Amp for jazz), and I run AT7s in V1 to V4 because I play clean jazz. I swapped a JJ AT7 for the Genalex Gold AT 7 in V1 only. Worth every penny and a significant upgrade from the JJ. Cleaner, more precise and more musical with a tighter low end. I recorded and listened back and others agree. I run Tung Sol 6L6 gc str for power. These were similar to the TAD redbase in sound, but way more stable.