Same experience here. I do not have SACD capabilities, but I use the ICBM between the pre/pro and the amp. I found a lot more easier to set up the sub with the ICBM controls than using the processor bass management and/or EP500 volume knob.

Now, I can set the volume of the EP500 a notch higher around 9-10 o'clock, and fine tune it with the ICBM sub level. The LFE control is extremely useful for fine tuning movie playback.

The bass is much tighter and the EP500 really shows off.

As a comment, for other ICBM users, I set the preamp with no subwoofer for music playing (leaving all the bass management to the ICBM) and with subwoofer output for the movie playback (for the LFE). With this two presets, its covered almost any situation.

By the way, do you use the recombine switch? I tried, but it changed the phase of the subwoofer, and it was not exactly 180deg, because changing the EP500 phase to 180deg did change but not in a good way. I left recombine off in the ICBM.

Cheers