Thanks for asking. I felt that placing the Indigos under the amps feeding the ribbons did make a difference.
I decided to purchase Herbie’s pucks for the amps feeding the base speakers, and for under the big Dali Megalines.
I also placed the amps on the Pangea amp stands. All of this has brought further removal of “veils” from the sonic
presentation. Of course I am using the PS Audio DAC and player (the player with the current software actually made
an improvement that I could hear). I am now hearing a presentation that brings the best sonic presentation (especially
of good recordings) that I have ever heard in my own home.