The JVC SEA-60 L is a graphic equalizer that allows users to customize sound output for better audio performance. It features multiple frequency bands, enabling precise adjustments to enhance various elements of music playback. The unit typically includes sliders for each band, offering a visual and tactile way to manipulate sound frequencies. The SEA-60 L may also incorporate features such as a loudness button, headphone output, and two-channel inputs. The design is usually compact and user-friendly, making it suitable for both home and professional audio setups. Its main appeal lies in its ability to improve sound quality and tailor audio to the listener's preferences.