Can you share a graph or a subjective impression of what changed? Also any particular seller that you bought a ZS6v2 from if the seller can be mentioned? I might put it on my radar for a rainy day.
I normally don’t like publicly sharing graphs, because the sub bass in my measurement rig has an exaggerated roll off (in other words, the
sub bass portion of my graphs cannot be trusted).
However, the treble is the only thing that appears to be different as far as I can audibly detect. So I’ll consider posting graphs...
As far as
who I’ve bought ZS6 from, I’ve bought of them from many different sellers. Gearbest, the Official KZ Store (or maybe it was the KZ Global Store), some rinky dink Aliexpress seller that was selling off their remaining stock stupid cheap a while ago, and another HeadFi member.
As far as
when I’ve bought them from, at different times over the last 3 years, as far back as the original release date to as currently as 1 month ago.
I have 7 different pairs, 3 black, 1 red, 2 green, 1 grey. And only the 1 grey and 1 black have nozzle lips. And only the 1 black (that has the nozzle lip) sounds noticeably different than all the others (but only with regards to treble). KZ
definitely toned down the treble.
Anyways, from what I can tell,
@DocHoliday is right in that you’d want to find a version with NO LIP if you want a
guarantee that you’re getting the v1. If you get one with a lip, there’s no guarantee if it’s the old OR new one.
Also, be aware that I only have 1 that has different treble. It’s possible that 1 is defective in some way. But I am not the 1st person to comment that the ZS6 treble has changed. I have seen that comment pop up a few times now. So I highly doubt it’s all QC errors. We know KZ has revised the 30095 - they’ve proudly advertised it with other recent IEMs. And the ZS6 has TWO of them right in the nozzle. So it all makes sense.
Now, does that mean everyone should run out and get a v1? Well, I remember a whole lot of people complaining about the treble (I didn’t mind it though). So the fact that they toned down the treble in a v2 might mean people would want to GET a v2 ZS6. In other words, all those people that complained about the original ZS6 - this v2 could be the ZS6 you wished KZ had made.