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RAYTHEON

12AU7A / ECC82 Baldwin by RAYTHEON Matched Pair Tubes Long Black Plates Halo Getter Made in USA '60s

12AU7A / ECC82 Baldwin by RAYTHEON Matched Pair Tubes Long Black Plates Halo Getter Made in USA '60s

381,00 DKK
381,00 DKK
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12AU7A / ECC82 BALDWIN by RAYTHEON – Long Black Plates – Halo Getter – Matched Pair – Made in USA – 1960s

AMPLITREX Tested – STRONG – Low Noise & Microphonics – Vintage American Raytheon Production

Test Results

Tubes tested on AMPLITREX AT-1000 Tube Tester

  • Test Conditions: Va = 250V, Vg = -8.5V
  • 100% Reference: Gm = 2200; Ia = 10.5 mA
  • Test Result: STRONG

Tube #1

  • Section 1: Gm = 1800; Ia = 7.4 mA
  • Section 2: Gm = 1800; Ia = 7.4 mA

Tube #2

  • Section 1: Gm = 1800; Ia = 7.6 mA
  • Section 2: Gm = 1800; Ia = 7.6 mA

Additional Tests Performed

  • Burn-in / Stability Test: 48 hours – Passed
  • Microphonics: Low. Tested and approved for use in hi-fi equipment, including phono stages and guitar amplifiers. Also suitable for the V1 position.
  • Section Balance: The sections are consistent and well matched, making the tubes suitable for use as phase inverters in both hi-fi and musical instrument applications.
  • Emission Quality: Strong – Strong and consistent emission, suitable for any compatible application.
  • Shorts & Gas: None detected.

Description

Premium matched pair of 12AU7A / ECC82 Baldwin tubes manufactured by Raytheon in the United States, dating from the early 1960s. The highly sought-after Long Black Plates construction with a Halo Getter identifies one of Raytheon's finest productions of the era, now becoming increasingly difficult to find.

Tubes bearing the Baldwin brand were originally supplied for high-quality professional electronic organs, where reliability, long service life, and quiet operation were essential requirements. Behind the Baldwin label lies genuine American Raytheon production, highly regarded by audiophiles for both its exceptional build quality and outstanding sonic performance.

The pair has been carefully tested and selected in our laboratory using the Amplitrex AT-1000 Tube Tester, achieving a STRONG classification. Both tubes were selected as Low Noise & Microphonics and exhibit excellent electrical balance, making them particularly well suited for high-end audio applications.

Sonically, the Raytheon Long Black Plate is renowned for its authoritative yet refined presentation, delivering deep, well-controlled bass, a rich and natural midrange, open yet smooth high frequencies, and a spacious, stable, three-dimensional soundstage. These tubes offer exceptional musicality and transparency while preserving the warm tonal character that distinguishes the finest American tubes of the era.

Ideal for hi-fi preamplifiers, driver stages, phase splitters, headphone amplifiers, and all equipment compatible with 12AU7A / ECC82 tubes requiring a premium matched pair.

The tubes are used, carefully tested, and fully functional. Cosmetic condition is fair, with partially faded or difficult-to-read lettering and visible signs of age, none of which affect their electrical performance.

A rare matched pair of genuine Raytheon Long Black Plate tubes, professionally tested and selected by Vacuum Tubes Treasures, ideal for those seeking one of the most highly regarded American-made 12AU7 tubes ever produced.

Condition

  • Condition: Vintage tubes – Tested and fully functional. Supplied in our custom protective boxes.
  • Functionality: Fully operational.
  • Cosmetic Condition: Fair – Lettering is partially faded or difficult to read, with visible signs of age. Please refer to the photos for details.
  • Manufacturing Code: Not decipherable. Production attributed to the 1960s based on construction characteristics.

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.