6SN7GT

Medium-Mu Twin-Triode Voltage Amplifier Tube, featuring a 6.3V heater layout. It integrates two independent, highly balanced triode elements designed to simultaneously manage low-frequency audio pre-amplification, phase inversion, and driving parameters, serving as an absolute industry standard in high-fidelity stereo gear and vintage guitar amplifiers, housed in a standard large 8-pin Octal-style base glass envelope (T-9 bulb).