What you are describing is incoherency. While I haven't noticed any coherency issues blatantly, let me listen.That's probably the effect that I am observing. They are not smooth. The individual components of the bass and treble are superior to the AZ80 but putting them all together doesn't seem to work for me. You said it better than me and maybe I just need to adjust to that. Edit- after thinking it through, most of my IEMs have been signle-driver. I have owned a few cheapie multi-drivers but mostly just to mess around with. So yeah, everything I've owned has been a single driver.
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