Description

Tested Pair of 12AT7 ECC81 ProComm Fender Receiver Guitar Preamp Vacuum Tubes Country of origin: Yugoslavia Production era: Estimate 1970s Model: 12AT7 ECC81 Manufacturer: NA Type: preamp Plate type: rare 17mm smooth gray vented Filaments: standard Base type: 9 pin Spacers: two Getter frame: halo wire Getter flash: top Glass: clear with seams Stencils: very good Condition: excellent, minor variations Usage (estimate): minimal Quantity: 2 Please review the photos for more detail Test results: Balanced test results for Gm: 3.80 / 4.10 and 3.90 / 4.2 For Gm, the suggested minimum is: 3.5 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