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RAYTHEON

5R4WGB RAYTHEON Matched Pair – Black Plates Hanging Filaments – Funke W19 Tested USA '67

5R4WGB RAYTHEON Matched Pair – Black Plates Hanging Filaments – Funke W19 Tested USA '67

€84,90 EUR
€84,90 EUR
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JAN 5R4WGB RAYTHEON Matched Pair Black Plates Double Halo Getter Hanging Filaments Rectifier Tubes Made in USA '67

Description:

The 5R4WGB RAYTHEON , in this 1967 JAN (Joint Army-Navy) version, features a ruggedized military construction, with solid black plates , dual halo getters , suspended filaments , and thick “potato masher” style glass. This is one of the most rugged and reliable rectifiers of the era, designed to withstand extreme operating conditions without compromising electrical stability.

This matched pair guarantees ideal symmetry between the channels, and is suitable for dual mono power supplies, medium power single-ended amplifiers or restorations of military and broadcast electronics, where reliability, silence and solidity of tone over time are required.

Bass : solid and authoritative. The low range is deep and well anchored , with a behavior that favors controlled impact over softness. Ideal for systems that require stability under load and a decisive response.

Mids : dry and focused. The mid frequencies are clean, linear and free from colorations , with a more “technical” than romantic setting. The voices are precise , and the acoustic instruments emerge with clarity and coherence .

Highs : neutral and transparent. The upper part of the spectrum does not introduce any attenuations or exaltations: the detail is well present , but never excessive. The brilliance is measured , with an analytical but not tiring rendering.

Dynamics : Reactive and stable. The dynamic behavior is fast but always under control , without hysteresis or perceptible delays. The valve handles sudden variations well, returning a clean and coherent signal, even with variable loads.

Soundstage : wide and rational. The soundstage is deep and well distributed , with excellent separation between channels and a spatial rendering that is more engineered than euphonic . Ideal for those seeking precision and transparency in the construction of the soundstage .

🎧 Use in Headphone Amplifiers and Driver Stages Hi-Fi
Thanks to its exceptional stability and extremely low noise floor , this pair is ideal for tube preamplifiers, dual mono DACs and reference headphone amplifiers , especially in systems where timbral accuracy and resolution are fundamental criteria. It pairs perfectly with headphones such as the Hifiman Susvara , Focal Utopia or Sennheiser HD800S , enhancing their neutral and transparent character.

🎸 Use in Guitar and Bass Amplifiers
The 5R4WGB is often used in high-grade American amplifiers or boutique military-spec models , where it offers tight rectification, crisp attack, and stable response under stress . Ideal for articulate clean sounds, jazz, country, and high-fidelity studio recording. Less suitable for those looking for tube-like compression and pronounced sag.

🎯 Note for audiophiles and technicians
A technically flawless rectifier, designed to last for decades. The JAN RAYTHEON brand, the presence of suspended filaments and the symmetrical internal construction make it an excellent choice for those who favor electrical rigor, symmetry between channels and reliability over the long term . The matched pair version represents an added value in dual mono or balanced contexts.

Test Results:

Valve tested on Funke W19 Tube Tester:

  • Test Conditions: Va = 100V ; Vf = 5.0V
  • Good from: Ia = 61 mA
  • Average 100%: Ia = 95 mA
  • Test Result: VERY STRONG

Valve 1:

  • Section 1: Ia = 110 mA
  • Section 2: Ia = 105 mA

Valve 2:

  • Section 1: Ia = 110 mA
  • Section 2: Ia = 100 mA
Additional Tests Performed:
  • Microphonics: Standard. Tested and compliant for use in hi-fi and guitar amplifiers.
  • Output Quality: Excellent – Very strong and stable output, no fluctuations.
  • Short circuits and GAS: Absent.

Conditions:

  • Condition: Vintage Tubes - Tested and in perfect working order. Supplied in our custom box for optimum protection.
  • Functionality: Fully functional.
  • Aesthetic Condition: Very Good – Clearly legible writing with slight signs of aging. See photos for details.
  • Manufacturing Code: 67-33 and 67-26 - Built in the 33rd and 26th week of 1967 respectively.

Find out why our valves are different →

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
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📧 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.