The Electro Harmonix 12AX7EH Preamp Tube is a High Gain, Ultra Low Noise Vacuum Preamp Tube

High gain preamplifier tube with ultra low noise and detailed, musical tone. Unique spiral filament eliminates filament to cathode induced hum common on amplifiers that use AC on the filaments.

The main features of the EH Preamp Tube include:

• Vacuum Preamp Tube
• High Gain and Ultra Low Noise
• Cathose induced hum for effect
• High Quality and Durable