Another option for EQ is to talk with Mitch Barnet of accuratesound.ca. Since you are ROON user you can get better EQ using Convolution filters inside ROON. This is better than the standard ROON EQ. Mitch can make them for any phone. He is a bit of a genius at this. He did the EQ for my small office, and I also bought his Convolution filter for the SR1a. I no longer use that with the Lumin X1 DAC and VM-1a. Not needed for the VM-1a amp.
Digital Room Calibration Services, Convolvers, Headphone Filtersets (accuratesound.ca)
Store - Accurate Sound (headphone stuff)