12AT7T ECC81 Vacuum Tube Single Piece Product overview A single 12AT7T ECC81 dual triode vacuum tube supplied as 1 PC. Designed for use as a direct replacement tube in audio and radio equipment that specifies the 12AT7 or ECC81 type. Key benefits Direct compatibility: Fits equipment that uses 12AT7 or ECC81 tubes with a standard 9pin Noval socket. Simple dropin replacement for and maintenance. Versatile function: Dual triode design makes it suitable for driver stages, phase inverter sections, oscillator and RF applications in a variety of equipment. Reliable construction: Glass envelope with metal internal structure and standard pinout for consistent mechanical and electrical fit. Performanceoriented: Medium gain characteristics and stable operating behavior for common preamplifier and signal driver roles. Important attributes Quantity: 1 PC 12AT7T ECC81 Function: Dual triode vacuum tube for audio and radio circuits Compatibility: Devices specifying 12AT7 or ECC81 tubes with a 9pin Noval base Size and form factor: Standard 9pin Noval tube profile for direct replacement Material: Glass envelope with metal internal electrodes and standard pin contacts Practical use scenarios Guitar amplifier maintenance: a worn driver or phase inverter tube to restore consistent signal drive in tube guitar amps. Hifi and preamplifiers: Use as a replacement tube in preamp stages where stable gain and low background noise are required for signal amplification. Radio and test equipment: Install in RF oscillator or buffer stages in vintage and hobbyist radio gear that specifies 12AT7 or ECC81 tubes. What is included One 12AT7T ECC81 vacuum tube, ready for installation. This description is focused on compatibility, function and practical applications to help you verify fit and suitability before .