The Sansui 661 is a vintage stereo receiver that was produced during the late 1960s and early 1970s. It features an all-solid-state design and is part of Sansui's lineup that aims to deliver high-quality performance for audio enthusiasts. The receiver is built with a robust steel chassis, giving it a durable and sturdy feel. The front panel is typically adorned with a brushed aluminum finish, providing a classic aesthetic. The device includes AM/FM radio tuning capabilities, a variety of input options for turntables, tape decks, and auxiliary sources, and has a power output of approximately 30 watts per channel at 8 ohms. It also includes tone control functions, such as bass and treble adjustments, along with a loudness switch to enhance audio playback. The receiver has a built-in power meter for visual feedback of output levels and adjustable balance settings for fine-tuning speaker output. The Sansui 661 is compatible with various speaker configurations and has a reputation for its warm audio characteristics and solid build quality, making it a sought-after component among vintage audio collectors.