Marantz sr73 signature version has good sound quality. Marantz power amplifier has 2.0-channel stereo, and both power amplifiers have two-channel output, which is different from the surround sound effect of power amplifier. Hifi power amplifier pays more attention to high fidelity, and the sound with lower sound quality is positive and more realistic to restore music. This brand of power amplifier hifi adopts advanced front and back stage separation, which can better ensure higher quality online sound quality. The super dynamic amplifier module inside the power amplifier helps to produce more dynamic and accurate sound.