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SYLVANIA

12AT7WA E81CC 6201 NOS Sylvania – 3 Mica Gray Wing Plates Square Getter Tube USA 1947

12AT7WA E81CC 6201 NOS Sylvania – 3 Mica Gray Wing Plates Square Getter Tube USA 1947

₩106,000 KRW
₩106,000 KRW
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12AT7WA ( E81CC 6201 ) SYLVANIA NOS 3 Mica Gray Wing Plates Square Tilt Getter Tested Tube Made in USA '47

Description:

The 12AT7 WA (E81CC) SYLVANIA , produced in 1947 in the military version (WA), features a 3-mica configuration, grey wing-type plates and a square tilt getter , which testify to its origins among the first series of technical excellence in the post-war period. This valve is a rare example of balance between structural robustness and sonic refinement , with a tonal output that combines precision, transparency and dynamic control.

Bass : dry, well-defined, and fast. The low register is not pronounced but extremely controlled, ideal for applications requiring precise rhythm and the absence of swelling , while maintaining a firm and coherent harmonic foundation.

Mids : Tidy, transparent, and slightly refined. Vocals are well-centered, with a natural timbre and a discreet yet discernible presence. Acoustic instruments maintain clarity without ever being intrusive. The overall character is sober and balanced.

Highs : extended and refined, with an open yet controlled texture. The high range never pushes forward, but accompanies the listening experience with elegance and coherence , avoiding harshness or fatigue even on high-resolution systems.

Dynamics : fluid, smooth, and precise. The valve responds immediately but measuredly, without excess, allowing for clear reading of microdetails and a harmonious transition between different sound intensity levels.

Soundstage : coherent, stable, and well-focused. The stereo image develops naturally, maintaining good channel separation and credible instrument placement, with a transparent but never cold soundstage.

The 12AT7 WA SYLVANIA 3 mica from 1947 , in this NOS version tested , is a valve with a neutral, polite and professional character, ideal for those seeking cleanliness, readability and operational stability in the audio field, both in hi-fi systems and in technical and professional equipment.

🎧 Use in Headphone Amplifiers and Hi-Fi Driver Stages

Thanks to its tonal transparency and the absence of artificial enhancements , the 12AT7 WA SYLVANIA proves excellent in the best headphone amplifiers and tube preamplifiers. In circuits such as mu-follower , SRPP , or cathode follower , it delivers a clear, detailed and fatigue-free sonic presentation, enhancing reference headphones such as the Sennheiser HD650 , Focal Clear , Hifiman Ananda or ZMF Aeolus , in configurations that aim for neutral and natural reproduction .

🎸 Use in Guitar and Bass Amplifiers

The 12AT7 WA SYLVANIA also finds its place as a driver or inverter in tube guitar amplifiers , especially in blackface or vintage-inspired boutique Fender models that use this type of tube to optimize headroom and definition . It offers a clean, controlled sound with a ready attack and progressive saturation , ideal for musicians who want linear dynamic response and tonal fidelity . On bass amps or rack preamps, it allows for a tight and articulate output, with excellent detail in complex passages.

🎯 Note for audiophiles :
A sober, solid and coherent tube, perfect for those seeking technical rigor and controlled musical performance , without timbral imbalances or artificial euphony. A reliable foundation for neutral listening systems or for professional applications where transparency in the gain section is essential.

Test Results:

Valve tested on AMPLITREX AT-1000 Tube Tester:

  • Test Conditions: Va = 250V, Vg = -2V
  • Average 100%: Gm = 5.5 ; Ia = 10.0 mA
  • Test Result: VERY STRONG

Valve:

  • Section 1: Gm = 4.1 ; Ia = 9.6 mA
  • Section 2: Gm = 5.9 ; Ia = 12.8 mA

Additional Tests Performed:

  • Microphonics: Low Noise & Microphonics – Tested and compliant for use in hi-fi systems and guitar amplifiers.
  • Output Quality: Excellent – Very strong and stable output, no fluctuations.
  • Short circuits and GAS: Absent.

Conditions:

  • Condition: NOS - New Old Stock - Tested and in perfect working order. Comes 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: 706 - produced 6th week of 1947

Find out why our valves 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.

  • 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.