The Project One Solid State Stereo Mark IV A

History & Description

The Project One Solid State Stereo Mark IV A is a vintage stereo receiver from the mid-1970s, released under the Project One brand, which was known for offering high-quality Japanese-built hi-fi components through Playback audio stores in the United States. While not as widely recognized as Pioneer or Marantz, Project One receivers earned a loyal following for their robust build, clean design, and excellent performance at a competitive price point. The Mark IV A was one of their more powerful and refined models, featuring a combination of elegant brushed aluminum styling, wood cabinet finish, and a smooth analog tuner dial. Today, it is a rare and collectible receiver, prized by enthusiasts who appreciate its warm analog sound and solid engineering.

Technical Specifications

The Project One Solid State Stereo Mark IV A is a 2-channel stereo receiver delivering around 80 watts per channel into 8 ohms, giving it enough headroom for both casual and demanding listening setups. It comes equipped with a sensitive AM/FM tuner, along with multiple inputs including phono, aux, and dual tape loops, offering flexibility for vinyl playback and other classic audio sources. The frequency response spans 20 Hz to 20 kHz, with total harmonic distortion under 0.3%, ensuring accurate and detailed reproduction. The unit measures approximately 500 mm (W) x 160 mm (H) x 410 mm (D) and weighs about 17 kg (37 lbs). With its power, striking appearance, and dependable design, the Mark IV A stands as one of the most desirable Project One receivers among collectors.