There's all sorts of audiophiles out there. Some hold beliefs rooted in pseudoscience.
And some are all about accuracy and measurements.
For instance, I use Sennheiser HD600[0], which I strongly recommend, attached to Topping DX3 Pro (old model)[1], which I cannot recommend, as the v2 model shipping now is garbage[2], a consequence of a redesign to work around high fault rates. Mine is fine as problem units fail within weeks, and I've had it for years.