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RCA

6G6G = VT-198A = 6G6GT RCA NOS NIB Matched Quad Black Plates Square Getter Power Pentode USA

6G6G = VT-198A = 6G6GT RCA NOS NIB Matched Quad Black Plates Square Getter Power Pentode USA

€61,80 EUR
€61,80 EUR
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JAN CRC 6G6G ( VT-198A ) RCA NOS NIB Black Plates Square Getter Power Pentode Matched Pair Tubes MADE IN USA '60

Description:

These JAN CRC 6G6G / VT-198A , produced by RCA in 1960 , are two power amplifier pentodes designed for military applications (JAN = Joint Army Navy). They are in NOS (New Old Stock) condition , never used, and come in their original sealed military packaging .

Internally, they feature black plates , a square getter, and a sturdy, well-centered symmetrical structure. The 6G6G is a variant of the 6V6 with slightly different operating characteristics, such as a lower anode voltage, a rounder dynamic response, and a smoother timbre, making it ideal for low-power but highly refined amplifiers.

Timbre characteristics and sound description

Bass:
Dry and controlled. They offer a quick and clean response, without bloat or excess, restoring the right weight to the instruments without invading the midrange. Excellent for listening in controlled environments.

Medium:
Refined and present. Voices sound natural and well-sculpted, with a pleasant fluidity. Acoustic instruments benefit from a credible and well-articulated soundstage.

Highs:
Delicate yet present. No harshness, no excess: the highs are silky, well-integrated into the soundscape, and enriched with good detail, ideal for long-term listening.

Dynamics:
Progressive and natural. Transient response is smooth, with consistent microdynamics. The tube reproduces changes in intensity with musicality and finesse, even at low volumes.

Soundstage:
Central, precise, intimate. The stereo image is stable and uncluttered, with good separation and depth. Not as extensive as that of more powerful tubes, but very realistic and focused.

🎧 Use in Push-Pull or Single-Ended Stereo Hi-Fi Amplifiers

Excellent for low-power hi-fi amplifiers, these 1960s RCA 6G6Gs deliver a coherent and engaging musical performance. Perfect for tube systems with high-efficiency speakers or vintage-style DIY projects. Also recommended for audiophile-oriented single-ended applications.

🎸 Use in Music Amplifiers

Rarely used in guitar, they can deliver a warm, natural tone in custom circuits. Their response is smooth, well-controlled, with gentle harmonic compression, ideal for clean, expressive sounds in recording environments.

🎯 Note for audiophiles and technicians

These 1960 RCA 6G6G, JAN military version, combine solid construction and natural musicality. A valid alternative to the more common 6V6, worth considering for refined projects or historic restorations of post-war American tube equipment.

Test Results:

Tested with AMPLITREX AT-1000 Tube tester:
Measurements taken after 10 minutes of preheating.
Test Conditions: Va = 180V ; Vg2 = 180V ; Vg = 9V
AVERAGE 100%: Gm = 2300 ; Ia = 15 mA
Test Result: VERY STRONG

  • Valve 1: Gm = 2400 ; Ia = 15.6 mA
  • Valve 2: Gm = 2400 ; Ia = 15.8 mA
  • Valve 3: Gm = 2400 ; Ia = 15.0 mA
  • Valve 4: Gm = 2400 ; Ia = 15.2 mA
Additional Tests Performed:
  • Microphonics: Low. Tested and approved 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: NOS - NIB - New Old Stock, New In Box - Tested and working - Supplied in original box.
  • Functionality: Fully functional.
  • Cosmetic condition: Excellent – Excellently preserved lettering, minimal signs of wear. See photos for details.
  • Manufacturing Code: 60-09. - Made by RCA - 9th week of 1960.

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.

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    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.