Mmitch7711 wrote; "suggestions/opinions on what power cord to use with the McIntosh MC-501 monoblocks that will bring out detail and transparency without boom or being overbloated."
Are you having these issues in your system right now? because these amps are not boomy or over bloated and have endless detail and transparency so there has to be another reason or reasons why if you are.
What is the rest of your associated gear, size of room etc.