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SYLVANIA

5Y4GA SYLVANIA NOS NIB Black Plates Halo Getter Rectifier Tube Made in USA

5Y4GA SYLVANIA NOS NIB Black Plates Halo Getter Rectifier Tube Made in USA

161,00 RON
161,00 RON
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5Y4GA SYLVANIA NOS NIB Black Plates Halo Getter Rectifier Tube Made in USA

Description:

This 5Y4GA SYLVANIA , NOS NIB (New Old Stock – New In Box) , Made in USA , is a high quality American straightener, belonging to the series with black plates and halo getter , one of the most reliable and long-lasting configurations of Sylvania production.
Designed for stable and long-lasting tube power supplies, the 5Y4GA is highly regarded in hi-fi and vintage equipment restoration.
In accordance with our operating standards, rectifier tubes are always tested with FUNKE W19 testers : this example reported a VERY STRONG TEST result, confirming excellent output, smooth operation and no shorts or gases.

Sound Characteristics
Like all quality rectifiers, the 5Y4GA affects the overall character of the amplifier, affecting the stability of the power supply and the dynamic response.

Bass
Solid, controlled, and well-structured. The power supply remains stable even under load, contributing to a tidy and consistent low end.

Medium
Clean and natural. The well-adjusted tension favors a clear midrange, with excellent intelligibility of voices and instruments.

High
Neat and free of harshness. The halo getter contributes to a smooth harmonic reproduction, without introducing harshness or irregularities.

Dynamics
Progressive and reliable. Typical response of directly heated rectifiers, with good elasticity and transient control.

Soundstage
Stable and well-focused sound image. Proper rectification helps improve separation and perceived depth.

🎧 Use in Hi-Fi Stereo Amplifiers
Ideal for:

  • 5Y4GA-compatible single-ended and push-pull amplifiers,

  • tube-powered preamplifiers,

  • vintage American and European appliances.

Suitable for systems that prioritize reliability, timbral consistency and musicality over time.

🎸 Use in Music Applications
Appreciated in:

  • guitar amplifiers and vintage instruments,

  • circuits that benefit from a softer and more progressive dynamic response,

  • philological restoration of vintage equipment.

🎯 Note for audiophiles and technicians

A high-end rectifier, ideal for preserving or improving the power supply behavior in vintage tube amplifiers and quality hi-fi.

Test Results:

Valve tested on Funke W19 Tube Tester:

  • Test Conditions: Va = 100V ; Vf = 5.0V
  • Average 100%: Ia = 92 mA
  • Test Result: VERY STRONG

Valve:

  • Section 1: Ia = 90 mA
  • Section 2: Ia = 93 mA
Additional Tests Performed:
  • Operation: Stable valve, quiet in operation, and suitable for regular and controlled power supply. Tested with a Funke W19 tester.
  • Output Quality: Excellent – Very strong and stable output, no fluctuations.
  • Short circuits and GAS: Absent.

Conditions:

  • Condition: NOS - NIB - New Old Stock, New In Box - Tested and working - In original box.
  • Functionality: Fully functional.
  • Aesthetic conditions: Excellent – Perfectly preserved writing, minimal signs of wear. See photos. The original packaging is badly damaged.
  • Manufacturing Code: Unreadable – Made by SYLVANIA USA, identifiable by its construction features. 1960s

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.