Some people put the ICBM between pre/pro and amp to provide superior bass management on all sources rather than just on the DVD-Audio/SACD source. The ICBM would still give you bass management for DVD-Audio playback from the RP-91, but you would (as you already note) disable all bass management in the Onkyo and let the ICBM handle it. There's no real risk involved. In addition to disabling the bass management, Outlaw recommends that you set the delays to be the same all the way around (or "zero" all the way around).

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