@j-wall
Unfortunately, no I have not tried the PS M-1200 it would be severe overkill for my horn application as was the M-700. That being said I did hear it back to back with the PS-BHK300 on Wilson Sasha DAW and my preference was the M-1200. If you need the power might be a solution especially with the tube rollable input stage.
Funny you mentioned this as it was on my mind for this morning... I will say the cheapo Crown did spank the PS M-700 previously leaving me shocked. I was so sure the PS would crush the Crown that I dug out the Crown box from the attic before installing the M-700s... then 3 days later took the Crown box back to the attic and sold the M-700s.