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HYTRON

5Y4G HYTRON Black Plates Square Getter Rectifier Tube Made in USA 1951

5Y4G HYTRON Black Plates Square Getter Rectifier Tube Made in USA 1951

¥286.00 CNY
¥286.00 CNY
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5Y4G HYTRON Black Plates Square Getter Rectifier Tube Made in USA 1951

Description:

The 5Y4G HYTRON , produced in 1951 in the United States and characterized by black plates , square getter and robust ST bottle structure, is a directly heated rectifier designed for low power and low consumption audio applications, electrically compatible with the 5Y3G (but with different pinout). HYTRON, a historic American company specialized in high quality military and civilian valves, stands out in this creation for its construction precision, operational silence and relaxed musicality .

It is particularly suitable for use in tube preamplifiers , small single-ended amplifiers or restored vintage radios , where a stable output voltage , a gradual start and a transparent but not analytical sound reproduction are desired.

Bass : smooth and well integrated. The low range is rounded and controlled , without exuberance but never weak. Perfect in systems where a harmonious and musical bass is preferred rather than impactful.

Mids : Warm and natural. The mids are the strong point of this tube: full central voice, rich harmonics and delicately rendered acoustic instruments . The timbre is organic and coherent , without excess.

Highs : soft and refined. The high range develops with attenuated brilliance , maintaining air and detail but without ever being aggressive or dry. Excellent for prolonged listening in controlled environments.

Dynamics : smooth and gradual. Transient behavior is soft , with a fluid and natural response , ideal in applications where musicality and harmonic progression are required, rather than a strong attack.

Soundstage : intimate and well structured. The stereo image is focused , with a credible depth and a good separation of the sound planes . It does not tend to artificially widen the scene, but favors immersive and centered listening .

🎧 Use in Headphone Amplifiers and Driver Stages Hi-Fi
Thanks to its low noise emission , smooth and stable voltage and quality mechanical construction, this 5Y4G HYTRON proves to be perfect for powering DACs, preamplifiers and tube driver stages . It pairs successfully with high-efficiency reference headphones such as the Audio-Technica ADX5000 , ZMF Auteur or Sennheiser HD580 , where it enhances transparency and naturalness .

🎸 Use in Guitar and Bass Amplifiers
Although not very widespread in the guitar field, it is used in low-wattage combos or handcrafted amps with soft power supplies , where it delivers a compressive, soft and musical sound, with an excellent response to the touch and a progressive saturation with an authentically vintage flavour.

🎯 Note for audiophiles and technicians
A balanced and quiet rectifier, ideal for high-end restorations , custom applications or for those who want a non-fatiguing audiophile voice . The 1951 HYTRON version, with black plates and a square getter , represents a solid and refined choice for low-power systems where the quality of the rectification directly influences the overall musical character.

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 = 75 mA
  • Section 2: Ia = 80 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, missing code on glass. See photos for details.
  • Manufacturing Code: 51-43 - Manufactured 43rd week of 1951.

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.