Skip this one, folks. This thing is basically junk. It works, but it adds hum. Tested this on a Nady PA, Yamaha HS5’s, and my TV soundbar all with the same result. There are ways to set the sliders that can help with this: Volume sliders up to max, and no frequency sliders below mid-way.
https://www.amazon.com/Rockville-10-Band-Graphic-Equalizer-Meters/dp/B06Y1T968T

