I have a ESP LTD 144DX Active 3 band eq with esp soapbar pups I run a Hartke HA2500 250 Watt head with the Hartke VX 410 Cab If you had to make some upgrades to help this setup what would you do??? New bass?? Different Amp?? Im looking to make some changes to find a different sound, amp is old, bass is early 2000's. looking for some opinions?