As someone who owns & enjoys several of your lower priced products (Go Blu/ZenDac 2/Hip Dac 2), I am strongly considering one of the Diablo models as my first high end piece.Actually, Diablo-X features an internal component in form of a motherboard atop the original PCB. This extra circuit is dedicated to correctly bias the product's 4.4mm headphone out, so that it can accommodate xMEMS drivers.
TL;DR: Diablo-X is a fair bit different both inside and out![]()
I don't currently have any headphones which employ xmems technology (to my knowledge) - can you please explain the differences & where the pros/cons are with each model vs the other?