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RCA

6SN7 GTB NOS NIB RCA – Black Plates Halo Getter Tested Tube USA 1970

6SN7 GTB NOS NIB RCA – Black Plates Halo Getter Tested Tube USA 1970

€42,44 EUR
€42,44 EUR
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6SN7 GTB NOS NIB RCA Black Plates Halo Getter Tested Tube Made in USA '70

Description:

The 6SN7 GTB RCA Black Plates , with Halo Getter , produced in the USA in 1970 , are an excellent choice for those looking for a preamp tube with a balanced tone, natural dynamic performance and great sonic transparency . The combination of Black Plates and Halo Getter contributes to a detailed and harmonically rich reproduction, making them ideal for both hi-fi preamps and high-end tube amplifiers .

  • Bass : Tight, well controlled and defined , with a dynamic response and no bloating . The low range is solid and present , ensuring a stable and precise sound without excesses.
  • Mids : Fluid, natural and slightly warm , with excellent instrumental separation. Voices emerge with excellent depth and transparency , ensuring immersive and realistic listening.
  • Highs : Airy, silky and well extended , with a clear and refined rendering. The detail is always musical and free from harshness , avoiding any listening fatigue.
  • Dynamics : Natural and well-balanced , with a fast and precise transient response that delivers a lively and expressive sound, perfect for capturing the subtlest musical nuances.
  • Soundstage : Wide and immersive , with excellent instrument separation and a spatial presentation that gives depth and three-dimensionality to the soundstage .

Thanks to their robust construction and careful selection by RCA , the 6SN7 GTB Black Plates from the 70s guarantee low microphonics, operational stability and long life , making them perfect for demanding audiophiles and high-end hi-fi systems . Their warm, detailed and balanced tone makes them an excellent choice for those who want precise and enveloping musical reproduction .

Test Results:

Valve tested on AMPLITREX AT-1000 Tube Tester:

  • Test Conditions: Va = 250V ; Vg = -8V
  • Average 100%: Gm = 2600 ; Ia = 9 mA
  • Test Result: VERY STRONG

Valve :

  • Section 1: Gm = 2700 ; Ia = 8.4 mA
  • Section 2: Gm = 2800 ; Ia = 8.0 mA
Additional Tests Performed:
  • Microphonics: Standard – Tested and approved 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 - NIB - New Old Stock, New In Box - Tested and working - In original box.
  • Functionality: Fully functional.
  • Aesthetic condition: Excellent – Perfectly preserved writing, minimal signs of wear. See photos.
  • Manufacturing Code: DD - Manufactured by RCA in November 1970

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.