Have been lurking over here for a while. Decided to give these a try,
They a very well balanced and have a non fatiguing sound that you can enjoy for hours, days and till the end of time
They compliment very nicely to monk+. I use monk+ when I am feeling energetic while I use these when I want to relax. The are similar to monks in sound stage and airy openness. Monks have very slightly sharper highs(which make them more detialed) and punchy bass where as the TY HI-Z have nice smooth bass and more pleasing highs. I am new at this and my ears might not be trained to hear subtle peaks or dips in FR so please take my words with a pinch of salt.
Also, when I tried these for first time, there was no bass and was unimpressive however after a few days they really started to shine and I use them now all the time for music, movies, tv shows.