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SYLVANIA

12AU7A / ECC82 NOS Baldwin by SYLVANIA Long Gray Plates Halo Getter Tested Tube USA '60s

12AU7A / ECC82 NOS Baldwin by SYLVANIA Long Gray Plates Halo Getter Tested Tube USA '60s

Regular price 7.400 HUF
Regular price Sale price 7.400 HUF
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12AU7A / ECC82 NOS Baldwin by SYLVANIA Long Gray Plates Halo Getter Tested Tube Made in USA '60s

AMPLITREX Tested – Low Noise & Microphonics – Guitar Amp Grade – Vintage American SYLVANIA Production

Description

12AU7A / ECC82 NOS Baldwin by Sylvania tube, Made in USA 1960s production, selected for guitar amplifiers, musical equipment, and compatible circuits where musicality, reliability, and tonal character are important elements.

Baldwin branded tubes were intended for professional musical applications, particularly high-end electronic organs. In this case, the production can be traced back to Sylvania Electric Products Inc., with Long Gray Plates and Halo Getter construction, typical of American production of the era.

The tube is in NOS – New Old Stock condition, with a clean internal structure and well-preserved construction. See photos for aesthetic details.

Tested using an Amplitrex AT-1000 Tube Tester, it showed VERY STRONG emission, low noise, controlled microphonics, and passed the Burning Test. The two sections show a slight imbalance, a characteristic that makes this specimen particularly suitable for musical applications and positions where perfect internal symmetry is not required.

Sonically, it offers a balanced, open, and natural rendition, with controlled bass, musical mids, clean highs, and a prompt dynamic response. The character is typical of Sylvania Long Gray Plates: solid, fluid, and pleasantly vintage.

Particularly recommended for guitar amplifiers in V2, V3, V4 positions, driver stages, buffers, and circuits compatible with 12AU7 / ECC82, where a strong, quiet, and musically valid American NOS tube can offer an interesting contribution.

A Guitar Amp Grade selection signed Vacuum Tubes Treasures, ideal for those seeking a 12AU7A / ECC82 Baldwin by Sylvania NOS with very strong emission, vintage American construction, and authentic sonic character.

Test Results

Tubes tested on AMPLITREX AT-1000 Tube Tester

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

Tube #12

  • Section 1: Gm = 2100 ; Ia = 8.3 mA
  • Section 2: Gm = 2400 ; Ia = 11.4 mA

Additional Tests Performed

  • Burning Test: 48h – OK
  • Microphonics: Low. Tested and compliant for use in hi-fi, including phono stages, and in guitar amplifiers. Also suitable for V1.
  • Balance: Good. The sections show a consistent balance, fully compatible with use in hi-fi and musical amplifiers, in all applications where absolute symmetry between sections is not required.
  • Emission Quality: Excellent – very strong and stable emission, without fluctuations.
  • Shorts and GAS: Absent.

Conditions

  • Condition: NOS – New Old Stock – tested and working. Supplied in our custom box for optimal protection.
  • Functionality: Perfectly operational.
  • Aesthetic condition: Excellent – markings well preserved, minimal signs of age. See photos for details.
  • Manufacturing Code: 312 052 → 312 indicates the manufacturer, namely Sylvania Electric Products Inc., Emporium, Pennsylvania. 052 → 0 indicates 1960, 52 indicates the 52nd week of the year.

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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.