The Marantz ST-325 is a compact and innovative stereo tuner that was introduced in the late 1970s. It is designed to receive FM and AM radio broadcast signals, featuring a digital frequency display for easy tuning and a variety of controls for adjusting the sound parameters. The ST-325 includes multi-function presets for storing favorite stations, offering convenient access to frequently listened channels. The design is characterized by a sleek front panel featuring distinct knobs and toggles, along with a backlit display for visibility in low-light conditions. The tuner generally supports stereo output and is compatible with a range of audio systems.