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GE

12AX7 / ECC83 Wurlitzer by GE Matched Pair Long Gray Plates Halo Getter Made in USA '63

12AX7 / ECC83 Wurlitzer by GE Matched Pair Long Gray Plates Halo Getter Made in USA '63

€64,90 EUR
€64,90 EUR
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12AX7 / ECC83 Wurlitzer by GE Matched Pair Long Gray Plates Halo Getter Made in USA '63

Description:

This matched pair of Wurlitzer-branded 12AX7/ECC83s , manufactured by General Electric in the USA in 1963 , represents a selection of American signal tubes originally intended for professional applications.

The Wurlitzer brand, known for high-quality musical instruments and jukeboxes, relied on suppliers like GE for select, reliable tubes. The internal construction was typical of General Electric of the time, synonymous with solidity and production consistency.

The structure includes:

  • Long Gray Plates
  • Halo Getter
  • robust and precise construction typical of the GE of the 1960s

The tubes have been carefully selected as a Matched Pair and tested in our laboratory on an AMPLITREX AT-1000 , with a STRONG result. They have also been found to be Low Noise & Microphonics , making them suitable even for sensitive circuit positions.

Sound Characteristics

The GE long plates offer a balanced sonic presentation, with a slightly more open and relaxed character than the short plate versions.

Bass: Well extended and controlled. The low range is solid and articulate, with good depth and stability.

Mids: Clear and natural. Vocals emerge with good presence and definition, while acoustic instruments maintain a balanced harmonic reproduction.

Highs: Open and airy. The top end is well-extended and clean, with a fine grain that promotes good detail readability.

Dynamics: Responsive and linear. Dynamic changes are reproduced accurately and naturally.

Soundstage: Wide and well-organized soundstage, with good instrument separation and a stable presentation.

🎧 Use in Hi-Fi Amplifiers

The 12AX7 GE long plates are particularly suitable for:

  • tube preamplifiers
  • phono stages
  • amplifier drivers
  • vintage and modern hi-fi equipment

The combination of low noise and low microphonics makes them suitable even for critical positions such as V1 .

🎸 Use in Music Applications

These tubes are also popular in musical instrument amplifiers for:

  • balanced dynamic response
  • good signal definition
  • stable behavior over time

Features that make them versatile for both studio and live use.

🎯 Note for audiophiles

  • Wurlitzer by General Electric – Made in USA
  • Year of production: 1963
  • Long Gray Plates – Halo Getter
  • Matched Pair selected
  • AMPLITREX AT-1000 Tested
  • STRONG Test
  • Low Noise & Microphonics

A select pair of 12AX7 GE 1960s , branded Wurlitzer, combining reliability, silence and balanced musicality , ideal for hi-fi and musical applications in true Vacuum Tubes Treasures style .

Test Results

Tested on AMPLITREX AT-1000 Tube Tester

Voltage Test: Va = 250V, Vg = -2V
Average 100%: Gm = 1600 ; Ia = 1.2 mA
TEST RESULT: STRONG

Valve 1 :

  • Section 1 : Gm = 1400; Ia = 0.7 mA
  • Section 2 : Gm = 1400 ; Ia = 0.7 mA

Valve 2 :

  • Section 1 : Gm = 1400 ; Ia = 0.8 mA
  • Section 2 : Gm = 1300; Ia = 0.7 mA

Additional Tests Performed:
  • Microphonics: Low Noise & Microphonics – Tested and compliant for use in hi-fi systems and guitar amplifiers.
  • Output Quality: Very Good – Strong, consistent output, suitable for any application.
  • 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:

  • 63-22 188 → RMA/EIA Open Date Code → manufactured week 22, 1963 - 188 → General Electric Company, Syracuse 1, NY

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.

Vacuum Tubes Treasures
www.vtt.store | www.vacuumtubestreasures.com
📧 info@vacuumtubestreasures.com

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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.