So I went to demo AKR03 earlier as planned:
And I'm pleased to say that it did disappoint me . I do give it benefit of doubt since it's not burned in (given that if burn-in does make it significantly better), but it didn't exactly just come out of the package yet the sound was so muddy that I didn't bother to listen to it for too long. It did sound very vivid though, which was something I didn't expect from an BA IEM. I had also tried its unbalanced cable unintentionally because I was given the IEM with the unbalanced cable at the beginning, so I was able to do a comparison of unbalanced vs balanced. Balanced was definitely better, but not as big a difference comparing to unbalanced IE800 vs balanced IE800, so I guess unbalanced vs balanced does vary from IEM to IEM.
Thanks to the demoing now I appreciate my balanced IE800 even more.
So it did disappoint me either ....