I think most companies are like that. There is no revising marshalls... there is hot rodding done by someone if you want a slightly different marshall, but they don't usually put out an amp and then tweak the channels and put it out again.
the 5150 hasnt changed.. technically became the 5150 ii but its fundamentally the same, although a slightly differntly circuit.
most companies put out a product and say... this is what it is... its fine like this wait 5-10 years if you want something else. (jcm 800 did that really change?, arguably the plexis did, but they were dealing with whatever parts they could get)
mesa is one of the few who says here is a product... we're gonna keep working on it and put out any tweaked revisions we come up with.. so there will be a new version.. whether it is just a mark 5 b or mark 6 and how long its gonna be are the unknowns.
the 5150 hasnt changed.. technically became the 5150 ii but its fundamentally the same, although a slightly differntly circuit.
most companies put out a product and say... this is what it is... its fine like this wait 5-10 years if you want something else. (jcm 800 did that really change?, arguably the plexis did, but they were dealing with whatever parts they could get)
mesa is one of the few who says here is a product... we're gonna keep working on it and put out any tweaked revisions we come up with.. so there will be a new version.. whether it is just a mark 5 b or mark 6 and how long its gonna be are the unknowns.