Electro-Harmonix 12AX7 / ECC83 Audio Preamplifier Thermionic Tube.
Part No. 12AX7-EH.
Manufactured in Russia by Electro-Harmonix.
9pin Noval base.
High gain, ultra low noise, Spiral filament for no hum. Short plate structure with improved materials result in no microphonics make them ideal for guitar amps, etc. Excellent replacement, nice balanced sounding tube.
This is a very popular dual triode preamp valve used in many professional guitar amplifiers such as Marshall, HiWatt, Vox, Orange & many others. Also popular in professional audiophile hifi amplifiers.
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