+1
I never totally understood why Marcus actually seems to prefer SWR live. This is not in any way a comment on the quality of SWR or a negative opinion of its sound. It's just that for such a definitive tone such as the MM tone we all know, the SWR's (especially the cabs) are probably not going to nail that sound as well as some other gear. So my guess is that he's either very familiar with and used to using it, or somehow in a live stage context it allows him to monitor himself optimally in terms of content and execution, with a slight trade-off of actual tone. The SWR's just may have the kind of cut-through (especially in the top end) that projects well to wherever he's standing, or however loud things get, without him having to work as hard. He knows that the audience will hear the DI'd FOH or recording, so a less than "perfect" stage sound is not an issue.
The other thing I thought is that the SWR's may provide a beneficial monitoring situation for him that goes beyond just his own sound: the blend of his bass with the other instruments in its musical context. As an ensemble player and as the musical director the SWR's may work best for him since he's not only critically listening to himself play, but the entire band in a more demanding way. Again, just a guess; only the Man himself knows why he chooses what he's using!![]()
I don't think there's much of a mystery there... he uses them because they work for him. IME SWR cabs always seemed a good match for that kind of sound. I have an old Triad that nails it so hard, I took it on one gig with my LMII and my Ash Marleaux Jazz and I slapped more that night than I had in years. Almost like a slap trance. I haven't taken it out since
I think a Marcus preamp would sell like hotcakes because all jokes aside, most bassists are gullible IME. They'll think they can buy what Marcus couldn't even buy... his experience. That is why he sounds like he sounds. Of course getting a good Ash Jazz bass type bass (and no, it doesn't have to look like one) will probably get you in the front door.

