Description

Tested Pair of Type 56 RCA Audio Receiver Radio Power Vacuum Tubes Country of origin: USA Production era: Estimate 1940s Model: 56 Manufacturer: RCA Type: preamp Plates: black round Spacers: two with tabs Base type: engraved UY 5 pin Getter frame: dimpled foil Getter flash: circular side Glass: clear Stencils: very good Condition: excellent Usage (estimate): minimal Cartons: NA Quantity: 2 Please review the photos for more detail Test results: Excellent strong balanced test results for Gm: .95 and .95 For Gm, the suggested minimum is: .71 Shorts: None detected For testing, a calibrated Triplett 3444A tester was used Compatibility: Suitable for vintage tube-based equipment, ideal for use in audio amplifiers, power amps, and general tube equipment The tubes will be carefully packed to ensure safe shipping Estimated delivery time within the USA is 3 to 7 business days Standard shipping service is US Postal 1st class Shipping is combined when applicable Please feel free to contact us if you require any additional information