Siemens 12AX7/ECC83 Vintage Tube

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Product Information

The Siemens 12AX7 ECC83 audio vacuum tube was first manufactured in Germany in the late 1930s. More commonly labeled a Telefunken tube, it was responsible for delivering the lower sounds that were transmitted through radio waves. It was produced as an aftermarket product and sold widely to distributors throughout the world. If you have been on a search for a smooth sounding tube with a glass bottom, this Siemens 12AX7 ECC83 option can be an excellent choice. The low plate current triode design of this product can be ideal for low level audio voltage amplification needs. It is commonly used in an input pre-amp because of its high Miller capacitance. Its high value resistor is 100,000 ohms in a guitar amp and 220,000 ohms in hi-fi equipment. It can also be set up to deliver negative feedback if the cathode resistor is not bypassed. The 12AX7 tubes make use of a miniature dual triode to produce their unique sound. This consists of a 6AV6 that delivers a high voltage gain. The cathode of the 12AX7 is indirectly heated. Its heater voltage is designed to be at 12.6 volts in series or 6.3 volts in parallel. Its heater current is 150 mA in series and 300 mA in parallel. With a maximum watt dissipation of one watt per section, it offers an amplification factor of 100. The 12AX7 has been in continuous production since 1947 due to its nice quality of sound and universal acceptance of its pin configuration with other devices. These long plate vintage Telefunken tubes feature an O getter. The O getter plates are responsible for the delivery of the deep bass notes in jazz, funk, and rock 'n' roll music. The long plate of the Telefunken tube can also be great for excellent midrange sound. These extended plates can offer smooth high notes and plenty of open air when listening to your tunes. The plates are constructed of tungsten. You can see the code on the plates through the bottom of the glass. This version of rare 12AX7 Telefunken audio tubes can balance each section exquisitely. These rare phono tubes deliver low humming, which can result in a crisp, nice sound. This rare Siemens 12AX7 ECC83 tube offers 1.2 mA of current and 1.60 mA/V. This breaks down to 1,600 MicroMhos per triode. They deliver 1.1 mA to 1.0 mA and 1.98 mA/V per tube. This triode design makes use of three electrodes. To install these rare tubes, just pull out the old audio tube and put in this similar replacement unit. The pins align perfectly into your vintage radio or guitar amplifier. Individuals who wish to restore vintage radios, ham radios, and instrumental amplifiers can find that the vacuum tubes produce the sounds that the equipment was originally designed to deliver. Instructions for installation and pin troubleshooting are included with each tube. Testing is completed to ensure that there are no filament leaks for preferred results when installing. With one of these rare Siemens Halske 12AX7 tubes, you can enjoy your music the way it was meant to sound.