I don't know the ZS3 very well as mine sound awful - from memory the ZS3 sounded dark with a small soundstage and recessed, however harsh mids. I can't see a relationship between the ZS3 and ZS10. The ZS10's allegedly elevated lower frequencies are contradicting the phonograph's review. And another head fier writes that the ZS10 sound like the ZSR but with less bass. To me, the ZS10's mid bass is overemphasized.
I gathered from your experience that the mid-bass is too forward and bleeds slightly into the vocals. I took some quotations for clarification but there was no mention of sub-bass which leads me to believe that the 10mm DD is focused mainly on mid-bass.
Thus far, your experience (without the dragonfly) has been over-emphasized mid-bass that forces the midrange into submission.
"To me, the ZS10's mid bass is overemphasized........"
"......bass and drums were overdone....."
"the mid bass was pushing a distant Diana Krall over the cliff and down into the ocean - including piano"
"ZS10 bass comes too close to the vocals for my taste, which congests the image"
"With the ZS10 you get a mid bass again pushing again the vocals. Diana's voice is a bit cleaner but also more distant"
"ZS10's overdoes the bass line again"
"Midbass too much for me"
"the strong mid bass is bordering on awful, it decreases and congests the soundstage"
Thus far, your experience (without the dragonfly) has been that they can be shallow and congested while the imaging is annoying
"the image became annoying"
"The ZS10 sound shallow and congested (at bassy pieces) to me."
In general you found the vocals to be recessed but with good resolution
"Voice is still a bit recessed"
"Diana's voice is a bit cleaner but also more distant"
Thank you for your input.
In retrospect I should have chosen another song in place of "King Of Sorrow" because the lack of resolution in Sade's voice is present in the actual recording which is unfortunate.
Thus far it appears that without your dragonfly the ZS10 has left a bittersweet taste in your mouth. Perhaps a good set of wide-bore silicones will clean up some of the mid-bass by offering a more diffuse presentation.
Please keep us posted if you spend any time having the ZS10 coupled to your dragonfly.
I'd be lying if I said that I was surprised to learn that your ZS10 sounded a bit wonky without the Dragonfly (possible impedance curves); I would expect that using your dragonfly would clean up the sound signature quite nicely.
Looks like B9's ZS10 arrived also so a more clear picture should begin to take form.
p.s. -
My original (matte-finish) ZS3 has slightly rolled treble and a slightly forward midrange (that is not strident in any way). The soundstage is slightly above average but it holds no candle to the ZSR, ZS6 or ZS5(i). The description of your ZS3 sounds quite different from my own.
Again, thanks for the input.