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This tube is widely used in most of the US-made amps, in particular - Fender. Fender amps with reverb use two 12AT7s - one for the reverb drive stage and one as a phase inverter to drive the push/pull output stage.

The 12AT7s make-up is very similar to the 12AX7 and can be substituted for a 12AX7 in a pinch, although it won't sound as good. Some players do prefer to use the 12AT7 in the driver stage such as a Marshall for a cleaner, brighter tone. (The driver or phase inverter is the 12AX7 located nearest the power tubes.)

The 12AT7 is rarely used in a tone-generating stage, but rather in function stages, so the GT-12AT7 is selected for durability. The GT-12AT7 is tested under extreme listening conditions and guaranteed to be free of excess noise and microphonic ring.

Price is for a Single Tube

List - $20.00

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  • Shipping Weight: 0.25lbs
  • 6 Units in Stock
  • Manufactured by: Groove Tubes

This product was added to our catalog on Thursday 22 March, 2007.

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