This is tested and works great!

The Kenwood GE-35 Graphic Equalizer is a high-quality audio device designed to enhance the sound quality of your audio system. Made by the reputable brand Kenwood, this model is specifically designed for equalizing audio signals to ensure a consistent and balanced sound output. Ideal for use in home audio setups, this graphic equalizer is a reliable and effective tool for improving the sound performance of your audio system.