i dont use the bass knob on my amps, and lowered everything on my amp. do you think the epicenter can be the problem? the epicenter knob was all the way down but the little gain buttons are up
edit: i was also running that amp daily with bad cliping for months and was getting bad smell from subs thats why i'm upgrading my audio and just waiting on subs to get built
Use the DD-1 on the Head unit Only. Set you HU where you get the "most" out of it. Then use the DD-1 after the Epicenter. Set the epicenter where you get the most out of it before clipping / distortion. Then set your amp. Done. If it is for crap after the Epicenter, then there is your issue. You very well could be over powering the RCA input on your amp from your Epicenter.