I use the Z-sys with Meridian DSP5500 speakers , and invaluable tool BUT.............. there are issues
Digital EQ has to be done in the time and freq domain (Like TACT or Sigtech) NOT like the z-sys which is just a glorified (and very expensive) digital partametric.

Read my review of the unit , specifically with Meridian speakers at http://www.tnt-audio.com/ampli/rdp1e.html

I will say this, the Z-sys is the most valuable component in my system.


Roon/Tidal, SBT, Trinnov ST2 , Twin Devialet D premiers, Vivid Audio Giya G1 Spirits, dedicated and treated room.
Meridian gear: 568.2mm and DSP5000's acting as TV speakers.