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Groove Tubes GT-12AT7 12AT7 dual triode vacuum tube engineered for superior audio performance in guitar amplifiers, preamps, and audio equipment. Factory-tested for consistent tone and reliability. Compatible with Marshall, Fender, Mesa Boogie, and other amplifiers requiring 12AT7 replacement tubes. 12AT7 dual triode vacuum tube with premium construction for enhanced tone and reliability Groove Tubes engineered for superior audio clarity and extended tube life in guitar amplifiers and audio equipment Factory-tested and matched for consistent performance and minimal noise across channels Ideal for preamp and phase inverter positions in tube amplifiers

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