Our Best-Selling 12AX7 is an Audiophile Favorite! 

The Electro-Harmonix 12AX7 provides high gain with ultra low noise and detailed, musical tone that rivals the most desirable NOS types. Unique spiral filament eliminates 'filament to cathode' induced hum common on amps that use A/C on the filaments. Very thick gold plated pins. This is an amazing replacement tube. 100% Guaranteed! Electro-Harmonix tubes are among the absolute best. EHX designs, manufactures, and engineers their tubes for demanding high fidelity and overall warmth.

At Music Direct, we offer our customers a 30-Day Money Back Guarantee on components, hardware and audio accessories. This allows you time to ensure you made the right choice. If you are not satisfied with your purchase, contact our customer service department or your audio consult directly to arrange for a return.
 
This guarantee is not applicable on all Fluids, Phono Cartridges, and some special order merchandise.
 
Music is only returnable if it has not been opened.

To view our full return policy, click here.
Contact us with any questions about this policy.