This is an effector that adds a sense of dynamism to sound. It dramatically changes the sound. Bypassing is also possible, allowing you to switch between on and off with a single touch. Originally designed for professionals and PA systems, it also has RCA pin jacks, so it can of course be used with home audio equipment. PA venues have a unique sense of presence and dynamism in their sound (similar to the sound in karaoke parlors). This device allows you to achieve that feeling at home.