The Marantz 4140 is a solid-state integrated amplifier that was produced in the 1970s. It features a power output of approximately 40 watts per channel and is known for its distinctive design and warm sound character. This model includes various inputs for connecting different audio sources and often incorporates a built-in phono stage for vinyl playback. The unit typically has multiple speaker output options and allows for tone control adjustments, such as bass and treble settings, to customize the listening experience.