I'm using a Virtual Dynamics David on my Emotive Erato, and find the combination to be very synergistic. The David reinforces the qualities of the Erato, especially the microdynamics. I also have a Virtual Dynamics Power One that I use on my phono stage. The Power One looks similar to the David, and it sounds very nice in its own right, but on the Emotive the David is the one with the "magic."
Dave
Dave