Mark K is probably the most capable in the UK in terms of getting people to buy gear. If Status need a cash injection, they release a new take on a King Bass or whatever bass he happens to be using at the time. There will be plenty of middle class bankers, doctors, solicitors queuing up to drop the cash.
Hell, that picture above has probably got more than a fair few Level 42 fans suddenly considering Mark Bass.
In reality, whatever Mark K is using is irrelevant. The sound out front is processed by the desk and what he is hearing will be coming from wedges - or for those on inears, processed signal in the desk from a DI.
The tone of a bass amp is becoming less and less relevant in these kind of scenarios.
It’s probably why there’s a load of guys scratching their heads trying to figure out why they can’t cop the same tone down the Dog and Duck... it’s the lack of Digicos, Midas, Allen and Heaths etc which is holding their tone quest back!