Description

Tested Pair of 12AX7 Sylvania Audio Receiver Pre-Amp Vacuum Tubes Country of origin: USA Production era: late 1960s Model: 12AX7 ECC83 Manufacturer: Sylvania Type: preamp Plate type: 17 mm gray pinched Filaments: standard Base type: 9 pins Spacers: two Getter frame: halo wire Getter flash: top Glass: clear Stencils: very good Condition: excellent, same lot construction Usage (estimate): minimal Quantity: 2 Please review the photos for more detail Test results: Excellent strong balanced test results for Gm: 1.5 / 1.7 and 1.7 / 1.55 For Gm, the suggested minimum is: 1.0 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