Just got them a few minutes ago. First impression: sounds really nice. I may prefer a bit more bass though, but nothing EQ can't solve. Powered by MacBook 3.5 mm output.
When it arrives (2 weeks I guess) I can do some ABC comparison with both truthears zero. Can't imagine how could I make a blind test of iemsCrazy times we live in. Considering the functionality this is ridiculously cheap.
Would be nice to see it tested though.
Just kidding: Someone would have to put one in your left ear and the other one in your right ear, without letting you know which is which (and with 1:1 SPL as another challenge).When it arrives (2 weeks I guess) I can do some ABC comparison with both truthears zero. Can't imagine how could I make a blind test of iems
That is due to lower ear gain? If yes, that might be a good thing based on how the new Harman research on in-ear preference pans out.according to crinacle's 711 coupler result (not the real thing), the 7hz zero 2 has a preference score of 73 https://github.com/jaakkopasanen/AutoEq/blob/master/results/RANKING.md
so as expected, lower than the zero 1
No, losing a ton of points from below 200 hz. The target thinks the extra 3 dB bass boost is objectively incorrect and scores accordingly.That is due to lower ear gain? If yes, that might be a good thing based on how the new Harman research on in-ear preference pans out.
I think the Zero and Red are really close . Both high quality for sure .Really great review Amir!
I just received the Zero 2 and while very good, I find the original Zero better. My four most frequently used IEM's and personal ranking are this:
1. 7Hz Zero
2. Truther RED
3. 7Hz Zero 2
4. Truthear BLUE
I find the original Zero to be nearly perfectly balanced, no-EQ. Extremely good with well mastered material. A magnificent bargain in audio. Probably the best in my memory.
I haven't heard Zero 2, but I've encountered 711 coupler measurement that sounded off by a few dBs below 200Hz in person. This of course tanks the preference model, but the model is not aware of the limited coupler-listener matching.No, losing a ton of points from below 200 hz. The target thinks the extra 3 dB bass boost is objectively incorrect and scores accordingly.
The HRTF hump masks that the DCA stealth and HD 800 hardly track each other at all. This is a parallel lines illusion.Headphone preference score seemingly doesn't care about it:
True. The HD800S tracks Harman neither in the bass, nor in the mids and upper treble. So how come it scores the same as the Stealth?The HRTF hump masks that the DCA stealth and HD 800 hardly track each other at all. This is a parallel lines illusion.
That database looks like junk. Look at all the 99 scores which you can open up to see they don’t track the target.True. The HD800S tracks Harman neither in the bass, nor in the mids and upper treble. So how come it scores the same as the Stealth?
The scores for the Stealth and HD800S come directly from oratory1990:That database looks like junk. Look at all the 99 scores which you can open up to see they don’t track the target.
it's literally how theyre scored. So you would mean Harman's score is "junk"That database looks like junk. Look at all the 99 scores which you can open up to see they don’t track the target.
Do you know how exactly the preference rating scores are calculated by any chance?The scores for the Stealth and HD800S come directly from oratory1990: