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SYLVANIA

12AX7 ECC83 Baldwin by Sylvania Long Gray Plates Halo Getter Tested Tube USA

12AX7 ECC83 Baldwin by Sylvania Long Gray Plates Halo Getter Tested Tube USA

€29,90 EUR
€44,95 EUR €29,90 EUR
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12AX7 ( ECC83 ) Baldwin by SYLVANIA Long Gray plates Halo Getter Tested Tube Made in USA

Description:

This 12AX7 (ECC83) Baldwin by Sylvania , made in the USA and originally selected for use in Baldwin organs, is a vintage American tube featuring Long Gray Plates and Halo Getter , a construction typical of vintage Sylvania ECC83s.

It is a valve that focuses on sonic character , natural musical response and that feeling of “life” that many modern productions struggle to convey.

Sound Features:

Low range: Full and smooth, with a rounded response that gives body and depth to the sound. The bass isn't overly controlled, but natural and musical, contributing to a sense of solidity and presence.

Midrange: The real strong point: warm, dense and rich in harmonics, with a pleasant emphasis on the mid-lows that makes guitars and electric instruments more expressive, three-dimensional and present in the mix.

Highs: Sweet and smooth, without any aggressiveness. The highs are designed to be musical and never fatiguing, ideal for those seeking an authentic vintage sound.

Dynamics and Response: Smooth dynamic response, with natural progressive compression as the tube is stressed. The sound grows organically, prioritizing feel and expressiveness over analytical rigidity.

🎸 Use in Musical Instrument Amplifiers

Particularly suitable for:

  • guitar amplifiers
  • V1 position in non-extremely critical contexts
  • blues, jazz, vintage clean and soft crunch

Offers:

  • natural harmonic saturation
  • progressive and musical breakup
  • less aggressive response than many modern ECC83s

A tube that invites you to play , enhancing the musician's touch and dynamics. It's a tube designed for those seeking character, musicality, and dynamic response , prioritizing sonic behavior and feel over laboratory-grade perfection.

Test Results:

Valve tested on AMPLITREX AT-1000 Tube Tester:

  • Test Conditions: Va = 250V ; Vg = -2V
  • Average 100%: Gm = 1600 ; Ia = 1.2 mA
  • Test Result:

Valve:

  • Section 1: Gm = 1460 ; Ia = 0.9 mA
  • Section 2: Gm = 1200 ; Ia = 0.7 mA
Additional Tests Performed:
  • Microphonics: Low. Tested and approved for use in guitar amplifiers. Also suitable for V1.
  • Balance: The sections present a coherent overall balance, fully compatible with use in musical amplifiers, in all applications where absolute symmetry between the sections is not required.
  • Output Quality: Strong – Stable output, no fluctuations.
  • Short circuits and GAS: Absent.

Conditions:

  • Cosmetic Condition: Vintage Tubes - Tested and Working - In our custom box.
  • Functionality: Fully operational. Ideal for preamplifiers, phase reversal stages and musical instrument amplifiers.
  • Cosmetic Condition: Very Good – Clearly legible writing with minor signs of wear, no obvious defects. See photos for details.
  • Manufacturing Code: 312 226 - SYLVANIA 26th week of 1952

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
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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.