Description: Early 1960s RCA 12AX7 Long Gray Plate Tube Early 1960s RCA 12AX7 Long Gray Plate Tube This listing is for a genuine RCA 12AX7 long gray plate tube from the early 1960s, with some original silk-screen remaining. These tubes are highly coveted by audiophiles, guitarists, and collectors alike due to their rich, musical sound, durability, and historical significance. Why RCA 12AX7 Tubes Are So Highly Sought After RCA, the Radio Corporation of America, was the original inventor of the 12AX7 tube, a high-gain dual triode tube that quickly became the standard in audio amplification. RCA’s long gray plate tubes from the 1960s are especially prized for their warm, smooth sound with a detailed midrange and balanced highs, making them ideal for both high-fidelity audio systems and guitar amplifiers. Unique Sound Signature: RCA tubes are known for their rich, full-bodied tone with exceptional clarity and warmth, providing a musical quality that enhances both playback and instrument amplification. Durability: These tubes were built to last, with robust construction and high-quality materials that ensure long life and consistent performance over time. Collector's Value: RCA 12AX7 tubes are not only functional components but also valuable pieces of audio history. They continue to be sought after for their unmatched sound characteristics and vintage appeal. Our Rigorous Tube Testing Process All our tubes are tested to a strict standard on the state-of-the-art Amplitrex AT1000 tester. For 12AX7 tubes, the key measurements are Plate Current and Transconductance (GM). These parameters are crucial in ensuring each tube performs as expected and provides the best possible sound quality. Our Grading System for 12AX7 Tubes: 0.9 mA and Higher: Considered NOS (New Old Stock) because these tubes are very close to their original specification (1.2 mA) and show little to no wear. This falls within natural factory variation. 0.7 to 0.8 mA: Considered "Good." These tubes are still functional with acceptable performance but may show moderate wear. Below 0.7 mA: Not sold, as they are likely too worn, may have reduced performance, and do not meet the quality expected by most customers. This system ensures buyers receive reliable and well-performing tubes. Amplitrex Test Results The following measurements confirm that this RCA 12AX7 tube is in very good condition, delivering the warm, smooth sound that RCA tubes are renowned for. Plate Current: 0.9 mA / 1.2 mA (1.2 mA NOS Bogey) Transconductance (GM): 1500 / 1500 (1600 NOS Bogey) Leakage: None Noise: Low Microphonics: Low No warranty is provided for these vintage tubes due to their age. However, we offer a 30-day return policy for defective tubes to ensure customer satisfaction. Please contact us within 7 days of receipt if you encounter any issues. Real issues only; subjective sound from tube rolling is not a legitimate return issue. Upgrade Your Audio Setup – Own a Genuine RCA 12AX7 Tube Today!
Price: 39 USD
Location: Lenoir City, Tennessee
End Time: 2024-11-04T02:19:20.000Z
Shipping Cost: N/A USD
Product Images
Item Specifics
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Brand: RCA
Type: Preamp Tubes
Model: 12AX7
MPN: Does Not Apply
Country/Region of Manufacture: United States
