i am running a Kustom Groove Bass 1200HD with the Kustom GB 4x10 cab. i was wondering if i can get powerful low end from this rig or should i breakdown and by something new for the low end i need. any suggestions on what i should buy. i am constantly on the road and need a 4x10 cab and rack-mountable head. please help me out on finding my new rig.