Can anyone tell me the difference between the Little Mark 4 and the MB58R. So far the only thing I can find is one has DI and effects loop on the back and the other is on the front. Also has anyone tried either of these amps and what did you think about it.
I just saw a picture of Marcus Millers Rack with Empirical Labs EL8 Distressor, His SWR Marcus Miller preamp and a 3rd item in the rack. Does any one know what that piece of equipment is on top of the preamp.