I move around so I tend to use BT DAC/AMPs (w/EQ).Just curious what dap/source and cable you use for the Legend X? Never heard an EE iem. Legend X will probably be my first.
I alternate between the EarStudio es100 and Qudelix 5k. For my ears (it's subtle) I notice a little fuller/dynamic sound with the es100 and a little more clarity on the 5k, but both are really good. Sometimes I use the ifi xDSD/Audio Player Pro if I am messing with MQA audio.
With cables I tried a variety of brands and types (copper, silver, etc) but wasn't really noticing notable differences. Sometimes over analyzing can lead to convincing yourself that you hear more than really is there. I just use the Effect Audio Vogue Series Maestro UP-OCC, which I believe EE originally shipped with the Legend X.