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GE

6201 JG-12AT7WA GE Tested Pair 3 Mica Black Wing Plates Made in USA

6201 JG-12AT7WA GE Tested Pair 3 Mica Black Wing Plates Made in USA

€94,90 EUR
€94,90 EUR
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6201 JG-12AT7WA GE Tested Pair 3 Mica Black Wing Plates Made in USA

Description:

This select pair of 6201/JG-12AT7WAs was produced by General Electric (GE) in the United States , and represents a high-reliability military (Joint Army-Navy) version of the classic 12AT7.
The tubes feature the typical 3-mica construction, with black wing plates , characteristic of many of the better GE productions of the 1950s–1960s.

These are individually tested valves, on professional equipment, ideal for audio applications and precision engineering.

Timbre characteristics and sound description

Bass:
Compact, fast, and well-defined. The 6201 GE delivers clean, controlled bass with good impact and responsive transients. Perfect for dynamic systems that prioritize clarity.

Medium:
Neutral and precise. The midrange is transparent and linear , with a clear and analytical sound, without emphasis. Voices and instruments are reproduced with technical rigor and excellent intelligibility.

Highs:
Detailed and dry. The high frequencies are bright but not aggressive , with a sober and effective timbre, typical of the American school. Excellent for listening in treated environments or on systems with a warm character.

Dynamics:
Responsive and incisive. Transient response is rapid , with excellent headroom and the ability to maintain control even under variable signal conditions.

Soundstage:
Stable and centered. The scene is well-focused, more technical than immersive , but with good source separation and consistent depth.

🎧 Use in Hi-Fi Amplifiers, DACs and Preamplifiers

The 6201 is an excellent choice for gain stages, driver circuits, or linear buffers in stereo hi-fi equipment, tube DACs, or preamplifiers.
This GE pair stands out for its precision and transparency , making it particularly suitable for analytical or study systems.

🎸 Use in Music Applications

In music, the 6201 GE is ideal for tube instrument preamps , boutique amplifiers, or studio rack units where you want control, signal clarity, and definition , with a more technical character than European or euphonic tubes.

🎯 Note for audiophiles and technicians

The 6201 GE Black Wing Plates with 3-mica structure , in the military JG-12AT7WA version, are known for their stability, quietness and uniformity in tests .
This used and tested pair, selected for quality audio applications, represents an excellent choice for those looking for precise, reliable and consistent sound over time .

Test Results:

Valves tested on AMPLITREX AT-1000 Tube Tester:

  • Test Conditions: Va = 250V ; Vg = -2V
  • Average 100%: Gm = 5.5 ; Ia = 10 mA
  • Test Result: STRONG

Valve 1:

  • Section 1: Gm = 4.9, ; Ia = 8.2 mA
  • Section 2: Gm = 4.8 ; Ia = 7.6 mA

Valve 2:

  • Section 1: Gm = 4.6 ; Ia = 8.8 mA
  • Section 2: Gm = 4.1 ; Ia = 7.4 mA
Additional Tests Performed:
  • Microphonics: Low Noise & Microphonics. Tested and approved for use in hi-fi and studio amplifiers.
  • Output Quality: Excellent – Very strong and stable output, no fluctuations.
  • Short circuits and GAS: Absent.

Conditions:

  • Condition: Vintage tubes - Tested and in perfect working order. Shipped in our custom box for optimal protection.
  • Functionality: Fully functional.
  • Cosmetic condition: Good – Lettering partially eroded, but still legible. Valve body in good condition. See photos for details.
  • Manufacturing Code: None. Year of manufacture detected by the internal structure - Manufactured in the 1960s

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.

Vacuum Tubes Treasures
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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.