Western Electric 300B Limited

About the Western Electric 300B Limited

The Western Electric 300B Limited by Shindo Laboratory is a single-ended monaural Class A power amplifier, first realized as a 300B design by Ken Shindo in 1979 and continually refined into Shindo's flagship 300B model. It employs a single genuine NOS Western Electric 300B output tube from the original late-1980s production run to deliver approximately 8 watts of pure Class A power, and is intended for use with very efficient loudspeakers of at least 90 dB sensitivity (and with maximum input of less than 50 watts). The amplifier features an input level controller, unbalanced inputs on Cannon Jack/XLR connectors, and a specified frequency response of 20 Hz-30 kHz +/-3 dB at 1 watt output. Its design focuses on natural presence and dynamic sound through advanced circuitry and carefully selected components. Power consumption is 80 W, with operating voltage of AC 117 V or 220-230 V at 50/60 Hz. The chassis measures 405 mm wide, 220 mm high, and 260 mm deep, and weighs 19.5 kg, making it one of Shindo's most prized single-ended triode monaural amplifiers.