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. >More
GT 12AX7 C tubes pass every Groove Tubes premium certification for microphonics, hum, physical characteristics and function. Quite simply the best 9-pin triode preamp tubes you can buy -- specifically designed and tested for musical instrument amplification and standard equipment on Fender amps. >More
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). >More
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