^Fully agree with this plus he can get a perfectly transparent amp and dac set-up for much less these days. There are numerous of options to choose from. Topping, JDS, SMSL etc all make cheaper and better performing gear (not that I think anyone can hear a difference vs the Hifiman in a blind setting).
There are of course also build quality and looks to consider and if it was me spending 700$ on a headamp, I’d most likely go for Lake People/Violectric. Then again I’m biased, own one and have never experienced any problems over the years.