The JVC SEA-80 is an audio equalizer that provides users with the ability to adjust sound frequencies to their personal preference. Equipped with a 10-band graphical equalizer, it allows for precise control over the audio spectrum, catering to different musical tastes and listening environments. The unit features multiple input and output options, ensuring compatibility with various audio sources, including tape decks, CD players, and amplifiers. It supports both stereo and mono operation, making it versatile for different setups. The design typically includes LED level indicators for visual feedback on audio levels and responsiveness. Overall, the JVC SEA-80 is designed to enhance audio playback by allowing users to customize their listening experience.