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  1. yuriv

    Reply to review by 'yuriv' on item 'Sony MH755'

    Hi @brianforever. I just saw this. I haven't posted in nearly two years, basically putting the hobby on pause since the pandemic began. The world has changed. When I wrote that report back in 2018, I saw no reason to conclude that the MH750 and MH755 had different drivers. They looked the same...
  2. yuriv

    Reply to review by 'yuriv' on item 'Apple USB-C to 3.5 mm Headphone Jack Adapter'

    Yes, you can see the adapter in the photo above. It works on both Macs and Windows PCs. I haven't tried it on a Chromebook yet. I also tried an OTG micro USB adapter on my Android devices, and that worked too, but the maximum volume was around -20 dB lower than what's possible on other OSs. It's...
  3. yuriv

    Relatively cheap headphone measuring kit?

    I should check out these forums more often. My last post before this one was way back in November, well before the lockdowns. The world has changed, and I've put aside all of these fun audio projects for now. I've been happily listening to music or making music with the cheap or mainstream gear...
  4. yuriv

    Etymotic ER2SE - A Reference Headphone for your Ears and Your Couplers

    First of all, thanks for sharing the files for the Harman 2018 and 2019 IE targets. I’m not exactly sure which experiment you’re referring to. My post is only about the new target curves and the SoundCheck software. Their measurement routine uses two couplers so they can measure both channels...
  5. yuriv

    Etymotic ER2SE - A Reference Headphone for your Ears and Your Couplers

    This information might be of interest to some of us: Source: Yes, it does say Harman IE Target 2019 v2 in...
  6. yuriv

    Reply to review by 'yuriv' on item 'Samsung AKG OEM In Ear Headphones'

    @SilverEars Oluv offered to send me one of these a while ago. Then you put it in the ER2SE tour. I figure it's cheap enough to get my own samples for modding. I wonder where you're hearing the canal resonance. For me it's at 6.3 kHz and no higher, which is not ideal. Best is 8 kHz because the...
  7. yuriv

    Reply to review by 'yuriv' on item 'Samsung AKG OEM In Ear Headphones'

    @SweetEars I just tried it with different kinds of wide-bore tips. I posted my findings inside a spoiler at the bottom of the review. I didn't notice a significant difference from stock tips. This IEM is sensitive to insertion depth. If you're getting much different sound, could it be that your...
  8. yuriv

    Sony budget earphone discussion thread (MH750, MH755, MH1C, EX300, etc)

    I don’t see much online about the Sony MH410c earbud, so I suppose this is as good a place as any for this post. Tyll Hertsens wrote back in 2011 that “pretty much all earbuds suck.” As a group, they consistently have the most anemic bass and the worst distortion. Measurements of earbuds back...
  9. yuriv

    Etymotic ER2SE - A Reference Headphone for your Ears and Your Couplers

    If we’re already measuring the frequency response at 94 dB SPL at 500 Hz with a sweep in REW, then we’re also already making basic distortion measurements at that level. Look at the difference: The the distortion at 3 kHz for this model is well known. (See the measurements at InnerFidelity...
  10. yuriv

    Etymotic ER2SE - A Reference Headphone for your Ears and Your Couplers

    Nice job measuring those! Some comments: The rig doesn’t look like it’s calibrated. It’s not clear how loud those IEMs are really playing. There was a comment earlier about the frequency response measurements being different depending on playback level on one model. If I’m not mistaken, one of...
  11. yuriv

    Etymotic ER2SE - A Reference Headphone for your Ears and Your Couplers

    Hi all, I just discovered this excellent thread after being out for a few months. I’d like to participate in the tour. If the stops are already set in stone, no big deal. I’ll just wait for the next tour. Otherwise, I’d like to be one of the last two in the U.S. because I might be getting more...
  12. yuriv

    What is the sound quality of iPhone, iPad, iPod (Touch)?

    There might be a simple explanation for that. The 5G and 5.5G iPod Video's volume control lets you drive the 3.5mm output so that a 0 dBFS sine goes into clipping. At maximum volume, the signal is hotter than the line out in the 30-pin connector. That one doesn't depend on the system volume and...
  13. yuriv

    Moondrop in-ear monitors Impressions Thread

    That’s terrific! I tried to replicate your result with the medium MH1 tip, but my coupler doesn’t like the squishification. I might have better luck with the smaller MH1 tips, if I can remember where I put them. BTW, on the MH755 the canal resonance is there, but it’s hiding behind another...
  14. yuriv

    Moondrop in-ear monitors Impressions Thread

    The resulting midbass was reduced quite a bit from stock. Now it’s only 3-4dB higher than the level at 1 kHz. It was 5-6 dB before, with the gap growing wider at lower frequencies. I suppose, if you want even less bass, you could decrease the rear volume even further. BTW, it reminds me of this...
  15. yuriv

    Moondrop in-ear monitors Impressions Thread

    I knew I had the wisdom to let someone try this first so that I could learn from their mistakes. Lol. I had suspected that the rear cup was mostly empty space. I had been trying to reduce the bass on this thing because it’s too much for me, but covering the three rear holes and the both ends of...
  16. yuriv

    crinacle's IEM Ranking List

    Apparently, what happens in the sound science subforum doesn’t stay in the sound science subforum. Lol. More than anything, it was posted in sound science as an invitation for others to reproduce my findings. I think the result sounds lovely, but that could just be the peculiar way I hear...
  17. yuriv

    Reply to review by 'yuriv' on item 'Sony MH755'

    LG Quadbeat 3 sounds similar. Also Sony MH750 and MH1 if you can take care of the bass response. If you're willing to play with reversible mods, Philips SHE3905 and SHE8105. See this post:
  18. yuriv

    Sound Science Approach to Modding Headphones

    A simple online search returns this: Jaakopasanen is a user here at head-fi, and it looks like he collected some files from various sources. Reddit user oratory1990 also made the files available. The curve in the file is...
  19. yuriv

    Reply to review by 'yuriv' on item 'Sony MH755'

    Thanks! I’m glad you found my post useful. I decided to share my notes after one year of experience with the MH755. So, I’m sorry for the length. I cut some stuff out and it’s still too long, Lol.
  20. yuriv

    Going fully Wireless IEMs. Too soon? Or are we there yet?

    To add to this, I asked the following question on the product page: 01/08/19 Q: What's the difference between this and the generic Comply Truly Wireless Replacement Earphone Tips? They seem to have identical product photos and the same item model number 25-10111-11. That is, is there anything...
  21. Apple USB-C to 3.5 mm Headphone Jack Adapter

    Apple USB-C to 3.5 mm Headphone Jack Adapter

    The USB-C to 3.5 mm Headphone Jack Adapter lets you connect devices that use a standard 3.5 mm audio plug — like headphones or speakers — to your USB-C devices. Product page: Price: $9
  22. yuriv

    Review by 'yuriv' on item 'EarStudio ES100'

    Unless otherwise noted, I’m writing about my experience with firmware version 1.3.2 and iOS control app version 1.7.2 - 1.7.5. I first wrote about my experience with the ES100 and firmware version 1.2.1 in this thread, with some basic audio measurements. I’ve been using the ES100 on and off for...
  23. EarStudio ES100

    EarStudio ES100

    Product page: Kickstarter page: Basic specifications: Bluetooth Audio Qualcomm aptX Classic/HD, AAC, MP3, SBC Hands-free / built-in high sensitive...
  24. yuriv

    Review by 'yuriv' on item 'Jabra Elite 65t'

    Every once in a while, the Jabra Elite 65t’s price drops down to $130, maybe lower. It happened during the two-week return period that I had them, so I asked Best Buy to match Amazon. The product page doesn't call these sport earphones, but the specs say they have an IP-55 rating, so I gave them...