I would like to draw the attention of those who seek to find a balanced crisp and amazing combination that just fits! So much so, I sold all my other gear as mentioned in my previous post as I have found the perfect match FOR ME!
The Sony IER-Z1R, TA-ZH1ES, along with the ZX507 (with v2.0.1 update which enabled streaming at hi-res bit rates) as the source. I always realised the Z1R needed more power to fully unleash its potential although it sounded pretty good on its own with the ZX507. Adding the TA-ZH1ES took it to a whole nother level. Lesser hiss, lower noise, and I am hearing things I couldn't hear before from varous tracks albeit hi-res or CD quality. This AMP/DAC was made to combine with Sony gears perfectly.
Low Gain is sufficient but High Gain output really maxed it out and Z1R sounded oh so amazing at its full potential. My other settings include DSD Remastering "ON", however i didn't need DC Phase Linearizer as it didn't make any difference as an analog setting as it converts all to digital anyway or DSEE HX as my music files are pretty good quality ranging from CD quality to DSD. Streaming TIDAL with the ZX507 with its latest update as well managed to obtain hi res bit rates these days so pretty happy with the DAP all round.
I got the TA-ZH1ES at a really good deal from Sony Store Malaysia at $1580 USD. I have to admit this combination isn't cheap by any means, in fact the total value cost me about $4000 USD rounded up. But once you start doing your work from home while listening to this, you got no regrets. Every tune so far sounds amazing. Listening to Giorgio by Moroder by Daft Punk, is enough to tell the whole story.
Happy to hear your thoughts and ideas (and criticisms for going with this - you could call it a safe combination but the price doesn't suggest a safe one at all). Happy to answer any questions.