Hi, i'm thinking of switching fro my cda-9825 head unit to the cda-9855 with the 7 channel eq , 4 volts from 2 and alot more features. will this add power to my amps i have the mrv-f345 along with mrd-m1005 and type x running off that. will my sub get louder not just from the 4 volts but just from having a eq when right now i dont have an eq. please help.
