Guitar Amp World

The 12AT7 is durable and usually used as a phase splitter or driver tube (part of the power section). It is great for most US made amps, especially Fender. Great for Marshall in the driver stage for a cleaner, brighter tone (should be changed every time power tubes are replaced for best performance).

This new tube from Russia is slightly brighter and lower gain. It offers quicker compression than GT 12AX7. Great for most Fenders, but may not be well suited for high gain Fender type amps (such as Boogie).

The 6L6B is perhaps the most reliable of the currently made types of 6L6s, with slightly less power and a more aggressive edge when pushed into distortion. These are currently used for the GT Fender amp tubes.

The 6L6B is perhaps the most reliable of the currently made types of 6L6s, with slightly less power and a more aggressive edge when pushed into distortion. These are currently used for the GT Fender amp tubes.

This new exclusive GT design features special "heat wings" attached to plate for more power, longer life, and better tone. The 1st choice of Matchless and many pro players including Billy Gibbons, Joe Perry, and Joe Walsh, these tubes are very dynamic, and produce a big bottom. The most powerful in their class.

This new exclusive GT design features special "heat wings" attached to plate for more power, longer life, and better tone. The 1st choice of Matchless and many pro players including Billy Gibbons, Joe Perry, and Joe Walsh, these tubes are very dynamic, and produce a big bottom. The most powerful in their class.

These tubes are good quality, long lasting type with a slightly aggressive edge when pushed into overdrive.

These tubes are good quality, long lasting type with a slightly aggressive edge when pushed into overdrive.