I will be heading down to my bass store to try this head tomorrow, but wanted to get some other opinions on it. I've been looking at getting a different tone from my rig. My past rig was a MarkBass LM2 through a 4x10 front ported MarkBass cab. Swapped out the LM2 for a Shuttle 6.0. LM2 was a good head, but I felt the sound was a little too 'bland'. Shuttle is an improvement but still looking for a more rock based tone. Will changing the head to the GK do this or am I getting let down in the cab department or elsewhere? Not looking for a hugely overdriven tone, just a nice gritty bass tone, i'm thinking Tool - The Pot kinda bass sound. Am I totally off?