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SYLVANIA

12AU7A / ECC82 NOS Baldwin by SYLVANIA Long Gray Plates Halo Getter Matched Pair Tubes Made in USA '60s

12AU7A / ECC82 NOS Baldwin by SYLVANIA Long Gray Plates Halo Getter Matched Pair Tubes Made in USA '60s

505,00 NOK
505,00 NOK
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12AU7 / ECC82 NOS Baldwin by SYLVANIA Matched Pair Long Gray Plates Halo Getter AMPLITREX Tested Made in USA ’60

AMPLITREX Matched Pair – Low Noise & Microphonics – Vintage American SYLVANIA Production

Description

This matched pair of 12AU7 / ECC82 NOS Baldwin by Sylvania, produced in the USA in 1960, represents a high-level American selection, designed for hi-fi and musical applications where consistency between tubes, quiet operation, and stability are fundamental aspects.

Tubes branded Baldwin were intended for musical and professional applications, particularly high-quality electronic organs, where reliable, stable, and quiet tubes were required. Behind the Baldwin brand, in this case, we find production from Sylvania Electric Products Inc., recognizable by the construction with Long Gray Plates and Halo Getter.

The pair comes from the same manufacturing code 312 052, traceable to the 52nd week of 1960. This element adds technical and collectible value, offering great production consistency between the two units.

The tubes are in NOS – New Old Stock condition, tested and selected using the AMPLITREX AT-1000 Tube Tester as a Matched Pair, with an overall result of VERY STRONG, low microphonics, low noise, and having passed a 48h Burning Test.

The strength of this pair is not only its very solid electrical state but, above all, the consistency of values between the two tubes, a characteristic particularly important in stereo preamplifiers, line stages, and applications where uniformity between channels is desired.

From an aesthetic point of view, the pair is in excellent condition, with well-preserved lettering, clean internal structure, and minimal signs of time. See photos for details.

Tonal characteristics and sound description

Sylvania Long Gray Plates from the early 1960s are appreciated for a balanced, open, and natural sound reproduction, with a very recognizable American musicality.

In this matched pair selection, the consistency between the two tubes contributes to a stable, orderly, and very pleasant presentation, ideal for quality stereo systems.

Bass

The bass range is controlled, articulate, and well-supported. It offers a solid foundation without being intrusive, maintaining rhythm and clarity even in the most complex passages.

Mids

The mids are natural, clear, and musical. Voices and acoustic instruments are well-focused, with a balanced and pleasant harmonic texture.

Highs

The high range is open and clean, with good extension and a smooth, never aggressive presentation. Detail remains well integrated into the musical message.

Dynamics

Dynamics are prompt and consistent, with a stable and well-controlled response. The matching of the pair helps maintain tonal uniformity and continuity between the two channels.

Soundstage

The soundstage appears wide, stable, and well-organized. The consistency of the pair promotes correct instrument separation and a balanced presentation of the stereo image.

🎧 Use in Hi-Fi Stereo Amplifiers

This matched pair is particularly suitable for:

  • tube stereo preamplifiers
  • line stages
  • driver stages
  • integrated amplifiers
  • DACs and tube buffers
  • restoration of vintage American electronics

The Low Noise & Microphonics selection also makes it suitable for sensitive applications, including compatible phono stages and positions where quiet operation and channel consistency are essential.

🎸 Use in Musical Amplifiers

In musical instrument amplifiers and compatible professional equipment, these 12AU7 / ECC82 Baldwin by Sylvania can offer:

  • excellent operational stability
  • natural harmonic response
  • contained noise
  • low microphonics
  • consistent behavior between the two tubes
  • good signal intelligibility

Characteristics that make the pair interesting both in the studio and in live applications, always respecting the technical compatibility of the equipment.

🎯 Note for audiophiles and technicians

This pair combines elements particularly appreciated by enthusiasts:

  • Sylvania Made in USA production
  • Baldwin brand
  • same manufacturing code 312 052
  • 1960 production
  • Long Gray Plates
  • Halo Getter
  • Matched Pair
  • Burning Test 48h – OK
  • Low Noise & Microphonics
  • VERY STRONG performance on both tubes

A high-level selection for those who want a truly consistent, quiet, and stable pair, capable of offering the charm of vintage American production with modern, accurate, and documented verification.

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 #10

  • Section 1: Gm = 2250 ; Ia = 9.6 mA
  • Section 2: Gm = 2200 ; Ia = 9.8 mA

Tube #3

  • Section 1: Gm = 2200 ; Ia = 9.2 mA
  • Section 2: Gm = 2300 ; Ia = 10.2 mA

Additional Tests Performed

  • Burning Test: 48h – OK
  • Microphonics: Low. Tested and suitable for hi-fi use, including phono stages and guitar amplifiers. Also suitable for V1 positions.
  • Balance: The sections are consistent and well-aligned, making the tubes suitable for use as phase inverters in hi-fi and instrumental applications.
  • Emission Quality: Excellent – very strong and stable emission, without fluctuations.
  • Shorts and GAS: Absent.

Condition

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

Discover why our tubes are different →

Condizioni di vendita e sicurezza

Anti-Tamper Security Seal Policy:
Each product is sealed to guarantee quality and integrity.
The right of withdrawal is subject to the seal remaining intact, as provided for by the Consumer Code.

Eco-Friendly Packaging:
The tube will be shipped with protective packaging to ensure safety during transport.
We use recycled and recyclable paper for packaging, along with brown ECO-KRAFT adhesive tape, eco-friendly and solvent-free.

Important Notes:
This tube, manufactured according to the standards of its era, is designed to operate in equipment compatible with vintage tubes.
It is recommended to follow standard safety guidelines to avoid malfunctions or damage.

Safety Assurance:
Although not tested according to modern GPSR regulations, this tube was designed to operate safely under the conditions for which it was manufactured.
We recommend using it only with equipment that supports vintage tubes, in order to avoid risks of malfunction or damage.
Technical data note:
In some cases, the technical data provided may be based on datasheets from other manufacturers or on equivalent historical specifications, when a specific official datasheet for the production batch of the listed item is not available.
Electrical characteristics may vary slightly depending on the production batch and manufacturing period, as is typical for thermionic components.

Safety Information:
Warning: Keep out of reach of children.
To be used under adult supervision.
Use the product only with equipment designed for vintage tubes.

Shipping & Returns

Shipping & Returns

Shipping Costs

Shipping costs vary depending on the total amount of the items in the cart and are calculated automatically during the checkout process.
All shipments are fully insured. The courier is automatically selected based on destination, weight, and shipment characteristics.

Shipping Times and Delivery

The indicated delivery times are purely indicative.
Any delays, storage issues, or operational changes made by the carrier (for example during peak periods such as holidays) are not attributable to Vacuum Tubes Treasures.

In such cases, we will nevertheless provide the Customer with all necessary support to open claims or assistance requests with the appointed courier.

International Shipping (Non-EU Countries)

For orders shipped to countries outside the European Union, any customs duties, import taxes, or additional charges are the sole responsibility of the recipient.
Vacuum Tubes Treasures has no control over these costs, which may vary from country to country. Customers are therefore advised to contact their local customs authorities prior to placing an order.

Warranty

All products sold by Vacuum Tubes Treasures are covered by the legal warranty of conformity, in accordance with Italian Legislative Decree No. 206/2005 (Consumer Code) and the Italian Civil Code (Articles 1490 et seq.), under the conditions set out below.

Warranty for Vacuum Tubes

Vacuum tubes, being components subject to wear and of vintage or specialized nature, are covered by a specific warranty of 6 (six) months from the date of delivery.
The warranty covers exclusively proven manufacturing or conformity defects that arise during proper use in accordance with technical specifications.

The warranty does not cover:

  • normal wear and tear,
  • subjective sound preferences,
  • use in incompatible equipment,
  • tampering or improper use.

Right of Withdrawal

Purchases made on the Vacuum Tubes Treasures website are governed by Italian regulations on distance contracts (Legislative Decree No. 206/2005).

Consumers have the right to withdraw from the contract within 14 (fourteen) days from the date of receipt of the goods, without providing any reason.

Conditions for Exercising the Right of Withdrawal

The right of withdrawal may be exercised only if:

  • the product has not been used,
  • the product is returned in its original condition,
  • the tamper-evident security seal is intact and not broken.

📌 Returns are not accepted for reasons related to sound preference, tube rolling, or subjective audio evaluation.
As with a music recording, a vacuum tube cannot be returned simply because its sound does not match personal taste.

Effects of Withdrawal

In the event of a valid withdrawal:

  • all payments received, including standard shipping costs, will be refunded,
  • refunds will be issued within 14 days from receipt of the returned goods,
  • the refund may be withheld until the goods have been received and inspected.

Refunds will be made using the same payment method used for the original transaction, unless otherwise agreed.

Return Shipping Costs

Return shipping costs are borne by the Customer, except in cases of:

  • verified defective products,
  • errors attributable to Vacuum Tubes Treasures.

In such cases, return shipping costs will be fully covered by us.

Damaged or Incorrect Items

If the Customer receives a damaged or incorrect item, it must be reported within 5 (five) working days from delivery, by email or telephone, clearly stating the issue.

Uncollected Parcels, Storage, and International Shipments

It is the Customer’s responsibility to monitor the shipment and promptly arrange for collection or customs clearance.
Any costs, delays, or losses resulting from:

  • failure to collect the parcel,
  • prolonged storage,
  • abandonment of the parcel at customs,

do not entitle the Customer to any refund.

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.

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