As I recall, long ago Meridian HQ (can't remember the individual) went on record on this forum stating they prefer NO power conditioning on DSP speakers.

Main system: Cable, Apple TV, HD621, G68D, AC11, 218, DSP7200SE (L+R), DSP3200 (L+R Rear)
2nd system: Cable, Apple TV, MC200, HD621, 568.2, M3100 (L+R)