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GE

JG-5751 GE NOS Gray Plates Disc Getter Tested Tube Made in USA '65

JG-5751 GE NOS Gray Plates Disc Getter Tested Tube Made in USA '65

5.800 ISK
8.700 ISK 5.800 ISK
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JG-5751 GE NOS Gray Plates Disc Getter Tested Tube Made in USA '65

Description:

The General Electric JG-5751 , produced in the United States in 1965, is a military-grade double triode tube belonging to the 12AX7 family, but with a lower gain factor .
This feature makes it particularly appreciated in the musical field for its ability to manage the gain , increase the headroom and make the amplifier more controllable and playable.

The Gray Plates construction with Disc Getter is typical of GE productions of the mid-60s, known for reliability, stability and balanced sound behavior.
It is a valve that does not seek spectacular effect, but works on feel , dynamics and response to touch.

Sound characteristics

Low end: Dry and controlled, with a solid, well-defined bass that maintains order even in sensitive circuits. Ideal for providing greater control without weighing down the sound.

Midrange: Clear and readable, with a cleaner setup than a traditional 12AX7. The mids remain present but never intrusive, favoring articulation and intelligibility.

Highs: Clean and smooth, with a natural extension that avoids harshness. The highs remain clear even at high volumes, contributing to a more relaxed and manageable sound.

Dynamics and response: The real strength of the 5751: more headroom, progressive response and less early compression.
The result is a more controllable amplifier that better follows the player's touch and enhances the player's dynamics.

🎸 Use in Musical Instrument Amplifiers

Particularly suitable for:

  • reduce the gain in amplifiers that are too powerful
  • V1 position to increase headroom and control
  • blues, jazz, dynamic cleans and soft crunch

Highly appreciated in Fender , Mesa Boogie amplifiers and boutique circuits, where it allows you to tame the preamp without distorting its character .

Test Results:

Valve tested on AMPLITREX AT-1000 Tube Tester:

  • Test Conditions: Va = 250V ; Vg = -3V
  • Average 100%: Gm = 1200 ; Ia = 1.0 mA
  • Test Result: GOOD

Valve:

  • Section 1: Gm = 1100 ; Ia = 0.7 mA
  • Section 2: Gm = 1100 ; Ia = 0.7 mA
Additional Tests Performed:
  • Microphonics: Very Low. Tested and approved for use in hi-fi and guitar amplifiers, even in V1. Ideal as a phase inverter.
  • Balance: Both sections are balanced , with very close values.
  • Output Quality: Stable output, no fluctuations.
  • Short circuits and GAS: Absent.

Conditions:

  • Condition: NOS - New Old Stock - Tested and working - Supplied in our custom box for optimal protection.
  • Functionality: Fully functional.
  • Cosmetic condition: Excellent – ​​Excellently preserved lettering, minimal signs of wear. See photos for details.
  • Manufacturing Code: 65-35 → RMA/EIA Open Date Code → manufactured week 35 of 1965

Find out why our valves are different →

Terms of Sale & Safety

Sales Terms & Product Safety

Each vacuum tube is carefully selected, tested, and verified in our laboratory before shipment. Where stated in the listing, test results, matching data, and declared characteristics refer to measurements performed using the specified test equipment and operating conditions.

Sound descriptions are provided for guidance only and reflect the characteristics generally associated with that particular tube type. Personal sound preferences, tube rolling, or perceived differences between audio systems do not constitute a product defect.

Before installation, please verify the tube’s electrical and mechanical compatibility with your equipment and follow the manufacturer’s instructions.

New production and NOS tubes are shipped with a tamper-evident security seal and internal technical documentation to ensure traceability of the product’s condition at the time of shipment.

Product Safety (GPSR)

Vacuum tubes are electronic components intended exclusively for use in compatible equipment and must be installed in accordance with the equipment manufacturer’s instructions.

Due to their historical or vintage nature, certain technical specifications may be based on original datasheets or equivalent technical documentation when documentation from the specific manufacturer is unavailable.

Use only with suitable equipment. Keep out of reach of children.

Shipping & Returns

Shipping & Returns

We ship worldwide using carefully selected express carriers and protective packaging specifically designed for vacuum tubes.

If you change your mind, you may exercise your right of withdrawal within 14 days of delivery, where applicable under the relevant consumer protection laws. The product must be returned complete with its original packaging and accessories, in the same commercial condition in which it was received. Return shipping costs are the responsibility of the customer.

Every returned item undergoes a technical inspection. Installation, use, tube rolling, or any other handling may reduce the product’s commercial value and may affect the refund amount, in accordance with applicable law.

If you believe the product has a lack of conformity, our laboratory will carry out the necessary inspections and apply the remedies provided by the applicable consumer protection legislation.

For further details, Customers are invited to consult the “Terms and Conditions” and “Refund Policy” sections of our website, or to contact us before placing an order.

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  • ATTENTION PLEASE

    Please understand that the writing on the glass of vintage valves has become very delicate over the years and comes off easily. You must handle them with extreme care to avoid this. Wear and damage to the writing on the valves reduces their market value and causes damage. Please exercise extreme caution.

  • ATTENTION PLEASE

    We wish to inform you that any attempts to manipulate shipping destination information in order to obtain lower shipping rates may be considered fraudulent acts. Please provide accurate information and contact us if you have any concerns. We reserve the right to review and, if necessary, cancel orders that we deem to be in violation of our conditions. Thank you for your understanding and cooperation.