About this gear
The KT77 is a power tetrode developed as a refined alternative to the EL34, offering a similar British-voiced midrange with slightly tighter bass and extended headroom. It's a popular drop-in upgrade for amps designed around EL34 or 6CA7 tubes, giving builders and tinkerers a way to explore different tonal shadings without redesigning the amp. Guitarists and hi-fi tube amp owners alike use it to add a touch more punch and clarity.
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