Offered here is a matched set of 4 RCA 7058 vacuum tubes, all marked Made in U.S.A. and printed with the same internal date code: 7239 (indicating production in the 29th week of 1973). These are NEW OLD STOCK (NOS) and come in their original RCA red boxes.
📌 Product Details:
• Tube Type: RCA 7058
• Equivalent To: 12AX7 (heater variant)
• Heater Voltage: 12.6V only (not center-tapped like standard 12AX7)
• Plate Structure: Gray plates, dual triode
• Getter Flash: Strong silver top getters on all tubes
• Origin: Made in U.S.A.
• Date Code: 7239 (July 1973)
• Quantity: 4 tubes (all matching numbers)
• Condition: NOS – unused and visually clean. Tubes have been stored in original boxes.
💡 Notes:
• These 7058 tubes are a rugged, stable variant of the 12AX7 family, ideal for audio applications where a consistent 12.6V heater supply is available.
• Perfect for hi-fi, guitar amps, studio gear, or restoration projects seeking vintage RCA tone.
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📦 Shipping & Guarantee:
Fast shipping from a trusted U.S. Seller.
Fully returnable if it does not function.