Does anyone have any experience with the RA-100 paired with a Marshall 1936 2x12 (G12-T75 speakers)? or an Orange PPC closed back 2x12 (Vintage 30's)? Is the Orange cab even compatible with the RA-100? It's a 16 ohm cab, and the Royal Atlantic only has 4 and 8 ohm options. That means it wouldn't...