ISN Earphones impression thread. New ISN D02 carbon crystal dynamic!!
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Medikill

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Are you using with the stock cable or something else?
I never found H40 is harsh or shrill on highs.
Stock cable, using final audio tips and the stock tips doesn’t seem to change anything tried with a 3rd party cable same thing, maybe mine is defective then
 
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rattlingblanketwoman

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Stock cable, using final audio tips and the stock tips doesn’t seem to change anything tried with a 3rd party cable same thing, maybe mine is defective then
Could you provide specific music examples where there are hot spots? Is it certain consonants in vocals, or certain instruments in the mix?

(Not an H40 owner but interested in narrowing down the frequencies that are bothering you out of curiosity. I can be sensitive to some IEMs in ways that usually don’t affect others too. For me it can be t/s/ch/sh in vocals when no one else seems to have an issue.)
 
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Medikill

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Could you provide specific music examples where there are hot spots? Is it certain consonants in vocals, or certain instruments in the mix?

(Not an H40 owner but interested in narrowing down the frequencies that are bothering you out of curiosity. I can be sensitive to some IEMs in ways that usually don’t affect others too. For me it can be t/s/ch/sh in vocals when no one else seems to have an issue.)
For example Glamorous by fergie, the lines just after she spells out glamorous sound very harsh.

seems to be mainly female vocals

Might be me then, had a similar problem with the ier z1r and had to sell those :/
 
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justrest

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Stock cable, using final audio tips and the stock tips doesn’t seem to change anything tried with a 3rd party cable same thing, maybe mine is defective then
I’ve tried with the Final Audio tips and there is no any harshness on the sound. You can contact with the place where you buy it for the replacement or fix.
 
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latent

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My impression for the ISN H40 with 3.5 mm jack, purchased during the black friday sale. Changing the stock tips to SpinFit CP145 I found the bass to really open up.
Whilst I haven't read many people stating it, I agree with another reviewer that these are bassy iem's. To me, the review of cqtek from March 23, 2020 seem to be spot on. In the review he stated:
Cons: The greatness of the low range may not be to everyone's taste.
- Not suitable for those looking for a bright, ultra detailed or analytical profile

This goes a long way with my own impression.

I enjoyed my old Earsonics SM3 v2 more than these headphones. And for other than EDM music I still sometimes prefer my full size headphones Beyerdynamics DT 770 Pro 80 ohm. Maybe it was also a bit silly for me to expect the sound to come near that of the Earsonics considering the vast price difference ($170 versus around $400 at the time).

Perhaps my expectations were a bit misplaced before going out and buying these. Don't get me wrong, the ISN H40 is a very enjoyable and comfortable headphone that sounds good. However, to me it simply does not seem to be the great all rounder across all genres. Something that I did actually expect based on reviews here on head-fi.

Therefore, my personal advice would be to try these iem's beforehand if it is possible rather than blindly buying them.

I hope this review helps others to make a more informed buying decision. Happy listening!
 
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archy121

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I keep missing out on ISN H40 sales in the Trade Forum. It’s been months since I started looking.

If anyone has a used pair and caN ship to the UK please PM. 👍
 
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Bob1960

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I ordered the H40 last Tuesday on AliExpress and they arrived this afternoon, 6 days, well impressed with that. Been listening to them for about 5 hours now, think its fair to say ill be holding onto these for a while.
 
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Nazar70

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Hello all. I have been the happy owner of the H40 for a year. I consider them excellent for their price. By the way, I would like to ask if anyone had the opportunity to compare the H40 with the Thieaudio Legacy 5?
 
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sutosuto

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I am glad that I decided to buy YY 5N UPOCC crystal copper for ISN D10 to replace the stock 3.5mm.
It is like I hear different iems. The bass is better, not too boomy and vocal is also more forward.

I did quick comparison with the LZ A6 which has been my daily driver recently. The A6 sounds metalic although more detail, the bass on A6 is faster but less quantity.
Soundstage, A6 is slightly wider but ISN D10 is also huge. The ISN D10 will be my basshead unit now.
 
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