Dedicated Circuit to Double Identical Setup

First post here, have knowledge and multiple visits to the site, just never made a post yet.  To preface my post, I am also aware that what I'm posting about has multiple threads in archive.  I have read through a lot of those posts.  However, I have yet to see any post with my identical situation.

The setup I have is a double system.  So I have two of the same of each:  Denon X2400, and Audiosource amp 210vs.  Each one of these will be in separate rooms driving separate HT/sound systems.  What I would like to know is how I should feed the dedicated circuits to these systems?  A separate 20amp run (planning to use 10/2 romex) for each setup or can both systems run off one 20 amp circuit?  The components are being housed only approx. 20' away from each other and running power is easy as it is all basement access under the floor.

All help is greatly appreciated- please let me know if you need more info, I didn't want to get too wordy but tried sticking with the basics.  Equipment is already purchased based on previous experience and models that I've had before so switching equipment is not optional/ideal at this point.

Thanks again