The JVC SEA-G 90 is a graphic equalizer designed for home audio systems, providing users with the ability to fine-tune their sound experience. It features a 7-band equalizer arrangement that allows for precise adjustments at specific frequency ranges. The SEA-G 90 is equipped with both input and output level controls, which assist in managing the audio signals effectively. Additionally, the equalizer includes multiple preset modes for different audio environments and a bypass switch that lets users compare equalized and un-equalized audio. Its design includes LED level indicators that help monitor output levels, and it is constructed with durable materials, ensuring reliability and longevity. The unit typically connects to various audio sources and components, making it a versatile option for enhancing sound quality.