I ran the MP2->mod SBM1 with the RXs for some shows and liked it...however for bassy shows, I found that instead of running the mod sbm1 (had the warm mod), I was better off using the D100 (same as the M1) A/D in that the end result was not as muddy.....but the presence mod to the sbm1 that doug does now produces a much cleaner sound from what I have heard thusfar for some of those bassy loud shows. Honestly though, the MP2->D100 will produce solid tapes...