INTRODUCTION :
Like the entire Kora range, Kora Class A audio amplifiers are powered by SquareTube, a tube/transistor design that provides the unique Kora sound. This is not a traditional tube gain stage combined with a transistor power section, but a fully hybrid system that simultaneously uses vacuum tubes and transistors. In essence, the tubes provide the signal voltage (the actual music signal) while the transistors provide the current (the power).
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