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PHILCO

5U4G U52 Philco by Sylvania – Black Plates Square Getter Rectifier Tube USA 1955

5U4G U52 Philco by Sylvania – Black Plates Square Getter Rectifier Tube USA 1955

€54,90 EUR
€54,90 EUR
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5U4 G ( U52 ) PHILCO Black Plates Square Getter Tube Rectifier Made in USA '55

Description:

The 1955 PHILCO Black Plates 5U4G (U52) , with Square Getter , is a high quality rectifier tube, built to provide stable and reliable rectification . Although it does not directly affect the timbre like a signal tube, its ability to provide a well-regulated, fluctuation-free voltage affects the dynamics, smoothness and overall transparency of the audio system .

  • Bass : Well controlled and defined , with excellent articulation that ensures clean reproduction, without excessive emphasis or loss of detail.
  • Mids : Balanced and transparent , with a clear and natural performance, maintaining tonal coherence and excellent separation of instruments.
  • Highs : Airy and detailed , free from harshness, with an excellent ability to preserve detail without being fatiguing.
  • Dynamics : Fluid and natural , with precise transient management that improves the depth and reactivity of the amplifier, favoring a harmonious and well-structured sound reproduction.

The PHILCO Black Plates from the 50s are distinguished by their robust construction and clean, stable rectification , making them ideal for hi-fi amplifiers and vintage audio systems , where a constant, well-regulated voltage helps to achieve a natural and detailed sound reproduction , with a smooth and musical sonic presentation.

Test Results:

Valve tested on Funke W19 Tube Tester:

  • Test Conditions: Va = 100V ; Vf = 5.0V
  • Average 100%: Ia = 120 mA
  • Test Result: VERY STRONG

Valve:

  • Section 1: Ia = 135 mA
  • Section 2: Ia = 120 mA
Additional Tests Performed:
  • Operation: Stable tube, silent in operation and suitable for providing a regular and well-controlled power supply. Tested with Funke W19 tube tester.
  • Output Quality: Excellent – Very strong and stable output, no fluctuations.
  • Short circuits and GAS: Absent.

Conditions:

  • Condition: Vintage Valves - Tested and working - In original box.
  • Functionality: Fully functional.
  • Aesthetic Condition: Very Good – Clearly legible writing with slight signs of erosion, no obvious defects. See photos.
  • Manufacturing Code: 5543 - produced 43rd week of 1955

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.

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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.