Zephyr Star MIMC ES Vs. ART-9 (old) update:
I ran them back and forth at least 7 times yesterday. (Which is a lot of setups and I've gotten much better at that now) Keep in mind the SS was open box so I guess it had some play time, but I've no idea how much. Whereas the ART has maybe 500 hours on it.
The ART is warmer. The low mids are more forward and there is a slightly round quality to them. Not muddy at all but just enough to be musical for me. You can still hear everything clearly down there like double kicks and fast bass rhythms.
The ART has just as much resolution. At first I thought the SS had more but as I went on it came down to EQ. They are both giving you as much detail. It's just arranged differently.
The ART has the highs and guitars/toms slightly more forward, but the highs here are more clear and less bright sounding.
The SS is not bright per say. I think it's very warm just not as much as the ART. I suspect this is down to the elevated low mids on the ART.
The SS has tighter bass but plenty of it.
The SS has more extended highs, but not harsh, and not quite as clear as the ART.
Both have a similar sound stage and resolution, and both have good imaging, but the ART's imaging feels holographic in my system. With the SS you can hear things moving left to right around the room, but with the art you feel they are in the room.
If I could replace the ART one to one I would stick with it, but as they are fading I think I will stick with the SS a while. The SS also may change with time to be even better on the imaging front. If that's true then I would choose it. As of now I would choose the ART in a perfect world. At the very least I will have backups when one needs to go in for fixing in a year or so.
A note on loading and volume: I prefered the SS with 200ohm vs the 1000ohm
@HiFi Guy mentioned. I would really like to try it as its recommended 470. At first I thought the SS had less energy, but this was down to output. SS asks for plus 60db. I can only give it 60db. This came down to six clicks on the amp up and down between the two. Once the SS is turned up its got that same energy.
All in all they are more similar than different, and if I'd never heard the ART-9 I would be in heaven. As it stands Im strolling around outside the gates hoping to be let in soon.