I've hade my epicenter for a little while now but I haven't really used it because I can't get it to sound right. Whenever I use it it just sounds muddy and doesn't blend in with the music at all. My box is tuned to about 40 to I have it set there. Could it have something to do with me not using the original phone cord that came with it? The original cord got messed up so I used the cord for the bass knob from my KX1200.