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Radsone EarStudio ES100

Discussion in 'Portable Headphone Amps' started by m4rkw, Dec 12, 2017.
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  1. niemamnazwy
    I have another lame :wink: question. I used to connect my Koss KSC75 and Koss Porta Pro to my old Honor 9 through a 3.5 mm jack. Now I’m using a simple pair of headphones attached to my new Huawei P30 Pro via its USB-C. In both cases I’ve been quite disappointed with the maximum loudness these sets could produce.

    Do you think my Koss headphones with ES100 paired to Huawei P30 Pro will guarantee enough power margin?
    Last edited: Dec 6, 2019
  2. peter123
    trellus, scotvl and niemamnazwy like this.
  3. davehutch
    New paragraph
    scotvl and SoundChoice like this.
  4. MonoJon
    @niemamnazwy , welcome to Head Fi! To answer your question in more detail, the disappointing power output from your P30 is completely irrelevant. The P30 will only be sending a bluetooth signal to the ES100. The power driving your headphones comes completely from the ES100. I got the ES100 to solve the same problem you are having - the headphone power output from my Sony Xperia phone is really too low to even drive low-impedance IEMs. It's an embarrassment for a product from Sony, especially since they have actively advertised the audio capabilities of their smartphones and are such a big name in the audio world in general. The ES100 solves the problem of low power output from a smartphone completely, and on top of that, it provides a better DAC, wireless capability, balanced and unbalanced output, and an app with a sophisticated equalizer and all sorts of other audio tweaking options. I was fortunate to get mine during the $79 Black Friday sale, though it is now back to $99 in the USA, but as one reviewer put it, it's really worth twice it's asking price for all it gives you.

    The ES100 is not without some minor drawbacks though, which I outlined in an earlier post HERE
  5. courierdriver
    Sorry...forgot my high school English class etiquette.
    SoundChoice likes this.
  6. niemamnazwy
    Does ES100 have an option of enabling a phone microphone instead of the one embedded in the receiver?

    @radsone Can we expect the upgraded version (MK2) in Amazon.de before Christmas?
  7. MonoJon
    My understanding is that it does not, but it includes it's own built in microphone which has been said is very good quality.

    You can get info for all the current mobile Bluetooth DAC/amp devices here: https://www.head-fi.org/threads/the...es-bluetooth-headphone-adapter-thread.906655/

    That the first few posts on that thread are actively updated and should have all the current info you need.
    niemamnazwy and BillJude56 like this.
  8. niemamnazwy
    I have no doubt about the quality of a built-in microphone. I am gonna use the receiver as a portable device though and I can imagine a situation when it is easier for me to get the smartphone out of pocket than the receiver that is clipped to my shirt or belt underneath a winter jacket.

    Do you think i.e. this app can give me control over that?

  9. Broquen
    This kind of apps use to have system compatibility problems but when they work, they use to be valid too (BTW description looks ok).

    EDIT: Last app update was on Dec. 3rd. Maybe it deserves a try in your case.

    And on more general terms, speaking of the ES100, I'd like to say that I'm every day more convinced that using LDAC makes sound quality so close to wired (always to my ears), that it is not longer an excuse (until you go with really expensive stuff at least).

    I mean, nowadays I much like would buy an ES100 with its dual DAC implementation and Bluetooth comfort, vs most low-mid wired solutions (curious that assuming that, makes me feel a bit like when I bought my first Kindle and my book collection turned into a romantic caprice that always accompanies me, but barely use).

    In any case, it's just an opinion. But hope this is not a standalone one.
    Last edited: Dec 8, 2019
    monsieurfromag3 and niemamnazwy like this.
  10. jasonb
    Completely agree. I'm only using Google Play Music, but I've used FLAC at 16bit 44.1khz and with LDAC I don't feel that I'm missing anything.
  11. posnera
    That's the official recommendation. In my opinion, keeping the iPhone around 80% and then using the phone to fine-tune the volume is worth a small potential decrease in fidelity. I don't like the buttons on the device at all and avoid using them whenever possible.
    peter123 and courierdriver like this.
  12. courierdriver
    While I don't have an iPhone (I'm an Android guy and I use Samsung Galaxy S8+), I have been following the ES100 manufacturers directions. In the app, I have set my Source volume at 100%, and use the Analog volume slider control in the app to control the output volume. It's much easier to control the Analog volume output in the app, compared to using the teeny tiny buttons on the device itself. For me at least, anyway. Whether I listen to Spotify or my own FLAC files from my SD card in my phone (using Hiby player), I always keep both the player and the Earsonics app open on my phone so I can easily switch between the both. I spent 3 hours listening to music last night using my smartphone and the ES100...not once did I ever touch the device itself to control volume. Everything you need to control the device, is available through the app on your phone.
    scotvl, trellus, SoundChoice and 2 others like this.
  13. bbnn
    do you guys use the es100 wired or through BT? I noticed that with wired, it seems to be capped at 16bit/44k? or am i just reading it wrong?if so doesnt that mean BT is able to output at better quality? which sounds silly? not sure.
    also has anyone used the es100 mainly for your car through aux? if so do you leave it in car 24/7 or take it out?
    Last edited: Dec 12, 2019
  14. kukkurovaca
    Wired connection is limited by the chipset. But either wired or BT sounds fine for me.
  15. bbnn
    phone side? if so: i see
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