The Sansui TU-666 is a solid-state analog tuner that was produced during the 1970s. It features a multi-segment LED tuning indicator and incorporates a wide range of FM and AM tuning capabilities. This model is characterized by its distinct vintage aesthetic, with a brushed aluminum front panel and sturdy construction. The UI is user-friendly, allowing easy selection of stations and control over various functions. Additionally, it typically includes features such as a mono/stereo switch, a selectable high blend circuit, and an output level control for fine-tuning audio performance.