I believe the mix of metals in the wire were changed from A to B. The B is certainly better, but not the gain that occurred when the original Colossus was upgraded to Rev A.
The revisions continue to refine tonal balance as well as tightening up the bass frequencies. The latest Colossus has terrific bass impact, but without the excessive bloom the first version had.
The revisions continue to refine tonal balance as well as tightening up the bass frequencies. The latest Colossus has terrific bass impact, but without the excessive bloom the first version had.