The Project One Mark IV A is a vintage stereo receiver produced in the mid-1970s by Project One, a brand associated with Playback Stereo Stores in the U.S. Manufactured in Japan, it offers a power output of approximately 40 watts per channel into 8 ohms. The receiver features a four-gang FM/AM tuner, providing enhanced sensitivity and selectivity for improved radio reception. It includes multiple inputs, such as Moving Magnet (MM) phono, auxiliary, and tape, offering versatility for various audio sources. The front panel is made of brushed aluminum, and the receiver is available with an optional walnut veneer cabinet, adding an elegant touch to its aesthetics.

In terms of dimensions, the Project One Mark IV A measures approximately 480 mm in width, 170 mm in height, and 330 mm in depth, with a weight of around 12 kg (26.5 lbs). These compact yet substantial dimensions make it a robust addition to any audio setup. The receiver's design reflects the aesthetic trends of the mid-1970s, featuring a sleek silver finish and a user-friendly interface. Despite its age, the Project One Mark IV A remains a sought-after model among vintage audio enthusiasts for its build quality and performance.