RCA 6FQ7 / 6CG7 Preamp Tube Clear Top1963 - Tested

Superior Sound Supply selling some seriously special stock. Here is a fantastic, vintage RCA 6FQ7 / 6CG7 Clear Top dual-triode tube from 1963. This New Old Stock (NOS) tube comes in its original box and features the highly regarded Gray Plates construction. It has been professionally tested on our Precision 612 tester and shows exceptionally strong, closely matched readings, ensuring reliable performance in your vintage audio circuit.

Technical Specs

• Brand: RCA
• Model: 6FQ7 / 6CG7
• Condition: NOS (New Old Stock)
• Packaging: Original Box
• Era: 1960s (Date Code: EQ - Aug. 1963)
• Construction: Gray Plates, Side O-Getter
• Country of Origin: Made in USA
• Test Results (Precision 612):
• • Shorts, Opens, Leakage: PASS
  • Triode 1 : 89%
  • Triode 2 : 90%

Condition Details

This tube is in excellent functional condition, testing at or near 100% factory specification. The triodes are very tightly matched (89%/90%), making this an ideal tube for balanced audio applications. Cosmetically, the glass is clean and the pins are straight. As noted in the photos, some of the original RCA labeling has faded or worn off over the years, which is common for a tube of this vintage. The original box is included and shows standard shelf wear.

Historical/Technical Context

The RCA Gray Plates 6FQ7 is a well-regarded medium-mu dual triode, often used as a driver tube or phase inverter in Hi-Fi amplifiers. Its robust black Plates design is sought after by audiophiles for its smooth and detailed sound signature.

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• New Items: Returnable within 30 days of delivery.
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