M Britt profiles

The '69 Marshall has it's own pack and it's awesome. https://mbritt.com/product/69-marsh-pack-36-profiles/

I'm not familiar with the other one off the top of my head.

The Solo ++ should be in the "Profile pack 1" pack ! =)

Just to make you aware that two Rigs based on the 69 Marshall 50 are available in our Michael Britt Rig Pack free of charge.