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Radsone EarStudio ES100

Discussion in 'Portable Headphone Amps' started by m4rkw, Dec 12, 2017.
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  1. HungryPanda
    I have never had an AK player so do not know
  2. Mouseman
    You could use an adapter to make it an unbalanced 3.5 plug and still use your cable, but I've never seen an adapter that would switch it to the pin map shown above. It might exist, but I've never had to look for one.
  3. davehutch
    Here's the diagram from the ES100 Radsone App.
    Follow this and you can't go wrong
    scotvl likes this.
  4. MisterMudd
    Just another reason my es100 is so freaking fabulous. Thanks
    Marco Angel likes this.
  5. Lurk650
    Like I said 2.5 TRRS balanced will work with any 2.5 balanced source. You can't go Unbalanced (Single Ended, i.e. 3.5mm TRS) to Balanced 2.5/4.4 TRRS with an adapter but you can go 2.5/4.4 to Single Ended with an adapter. You can also go 2.5 to 4.4 with an adapter, that's what I do with my Sony ZX300. As I said, I buy all my cables in 2.5 TRRS then simply use the FiiO if I want to quickly connect to my phone or my iFi Micro BL, when using my ZX300 I use my iBasso 2.5 female to 4.4 male adapter.
    peter123, HungryPanda and subwoof3r like this.
  6. subwoof3r
    Since I try to make full cycles to my unit, looks like I’m encountering a little issue about battery stats.

    I try to charge to 100% but once the green led appears, once powered ON, the indicator seems to display 88%. I had to recharge again and after 5 minutes the green led appeared again and it was charged up to 92%, tried again without any success to charge up to 100%.
    The « Battery care » switch from app was already turned OFF before this, so I tried to ernable it, reboot, and redisable it, then re-try and i twas this time charged to 100%.
    Once it was at 100% I immediately let the device idle (turned off) for 2 hours, and after turning it on it showed 93% last. Not sure why ? looks like there is a bug in the battery management.
    I triied using my unit for 20 minutes (until it showed 90%) but after turned ON later it showed 92% again.
    Does this bug affects everybody here ? or do I have a defective unit maybe ?

    Many thanks in advance
  7. tracyca
    Do you have battery management on, if so it will not power the battery to a full 100% to save the life of the battery.
  8. Alphasoixante
    It looks like my beloved es100 has bitten the dust. I bought it in July of last year and, I have to admit, I was not gentle to it. I'm actually surprised it has lasted this long! Before I lay it to rest, I'll describe what's going on and maybe someone out there has figured out how to fix it?

    It randomly and frequently reboots. It doesn't matter whether headphones are plugged into balanced, unbalanced, or not at all.When the reboot occurs, most of the time it reconnects to my Galaxy S8+. However it takes a while to reconnect (much slower than when powering on). I recently updated firmware to latest and it seemed to stop the issue for a few hours, but it continues. Oh, and it also reboots when used as a USB DAC with my Win 10 PC. The one thing I'm realizing as I'm typing is that I haven't tested whether the reboots occur when music is playing, when it's not or both.

    Anyhow, I'm very bummed.
  9. subwoof3r
    Problem is that, as I said, I had the switch already turned off, so the issue looks like it don't really charge up to 100% although that switch is well turned off :frowning2:
  10. tracyca
    Sorry about that I was quick reading in my kids school parking lot. Did not see that you had battery management off.
    subwoof3r likes this.
  11. subwoof3r
    No worries! :)
  12. Slater
  13. gordec
    Got the ES100 yesterday. I'm using it with Westone ES60 and Dita Oslo cable with 2.5 TRRS. The immediate impression is large sound stage. Where I feel it lacking is detail and dynamics. I'm using it in LDAC mode with Note 9 and in APTX it sounds about the same. So far I can't say it's better than straight out of the headphone jack of the Note 9 which BTW is a very good DAC. No one talks about it.

    bidn likes this.
  14. rbf1138
    Just got an es100. Paired it with my iPhone but I’m getting some faint crackles when playing. Is there anything I should be doing to eliminate this, or anything I’m doing that may be causing this?
  15. Lurk650
    @gordec yeah, Note 9 DAC is actually pretty solid. Still prefer to use the ES100 since I run balanced though.
    bidn likes this.
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