The lyr is actually better with the maddogs and the 650 than it is with the he400.
Let me say this about the maddogs. IMO they justify the price in absolutely every way. They are wonderfully voiced and like they cost much more than $300. The mids are the only ones that I've found to compete against the 650. I actually like the MD mids better.
So the Mad Dogs need amping? I wonder how well they work with the M&M.
At the end of the day, I really think I'm gong to need to demo the Mad Dogs from somebody on the forum in some kind of temporary trade or something along those lines, because I'm intrigued but I just can't picture what they bring to the table.