Electro-Harmonix 12AX7 Preamp Tube

New in box. From Electro-Harmonix: Superior high gain short plate format Twin Triode, with ultra-low noise and detailed, musical tone. Most popular replacement for all circuits requiring 12AX7/ECC83 types. 

• Ultra-low noise thanks to unique spiral filament which eliminates cathode-to-filament induced hum on certain amps
• Best all-around choice and best value for 12AX7
• ECC83/7025 equivalent
• Many OEMs use relabeled Electro-Harmonix vacuum tubes in their amplifiers 

Electro-Harmonix tubes are all new designs and are of excellent quality. Many OEMs use relabeled Electro-Harmonix vacuum tubes in their amplifiers. If you want great sounding tubes at a very reasonable price, then Electro-Harmonix tubes should be on your list.