If anyone's on the fence with these, I wrote up a fairly in-depth review detailing their sound, source synergy and extensive comparison to similarly priced models including the original King, IT01, EN700 Pro, F9 Pro, 1More Quad Driver and Dunu Falcon-C. These are really soild for the price, great build, nice technical sound with a brighter signature. I've also attached the FR graph below. Hope this helps some people out!
Full review here: https://everydaylistening.net/2018/02/21/tfz-king-pro-review-resolution/
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FR measurement (for reference, take its accuracy with a grain of salt):
RJSLBStruth be told, I bought King Pro solely due to your review and when I audited it at lendmeurears. Thank you for the write-up, King Pro is my daily driver for now..
Full review here: https://everydaylistening.net/2018/02/21/tfz-king-pro-review-resolution/