Recent content by wslee
  1. wslee

    Radsone EarStudio ES100

    @SubMash, @PiSkyHiFi: Appreciate your input! I think Fiio has been doing great and we can't be a competitor of theirs, assuming the company size, age, sales and all others, at the moment. One thing I've learned, the consumers are honest and smart enough far more than what we expect, giving us...
  2. wslee

    Radsone EarStudio ES100

    All, Last week, we've finally got the LDAC library package from SONY. The integration has been going smoothly and now we're having LDAC streaming through ES100. (It sounds quite better than what we expected, by the way.) And we're preparing for the SONY LDAC certification process. I'm not...
  3. wslee

    Radsone EarStudio ES100

    Regarding aptX, I think aptX.com is a more reliable and genuine source. aptX.com, managed by Qualcomm, has the official aptX, aptX HD product list. They have the internal conformance testing procedure and Qualcomm engineer run the test on a manufacturer request. After having their own internal...
  4. wslee

    Radsone EarStudio ES100

    Let us check the above shortly. But, basically, the receiver sends the supported codec list to the transmitter, in the beginning, then the transmitter selects one of them. The selection of the active codec always depends on the source device, smartphone. It seems that there's no Xperia X...
  5. wslee

    Radsone EarStudio ES100

    @rafaelo: Using ES100 as a preamplifier, connecting ES100 output to a power amplifier input, would just work fine as intended without any further option, as long as you keep the one rule. Unbalance to Unbalance / Balance to Balance Please just give it a try and let me know if any further...
  6. wslee

    Radsone EarStudio ES100

    When new feature and corresponding configurations added, the other settings are reset together once after the F/W update. Appreciate your kind understanding. Thanks, WS
  7. wslee

    Radsone EarStudio ES100

    Unfortunately, there's nothing we can do other than just waiting for Amazon's call. To all ES100 users here, May I ask you to write a short review on Amazon ES100? Any comment would be appreciated. Good and/or bad, anything would be fine. Thanks and Regards, WS
  8. wslee

    Radsone EarStudio ES100

    @rkw, @PiSkyHiFi: Actually, we've already noted the suggested Car Mode well at the beginning. We couldn't figure out how to make it yet, assuming the current HW and FW architectures. And I found an idea last night: - disable the built-in battery charger forcibly - fully discharge the battery...
  9. wslee

    Radsone EarStudio ES100

    It's OK, as long as you can hear the sound. (It's all or nothing.) No worry! Thanks, WS
  10. wslee

    Radsone EarStudio ES100

    Review from NAPIER LOPEZ: https://thenextweb.com/reviews/2018/06/09/radsones-earstudio-is-the-best-gift-for-audiophiles-missing-the-headphone-jack/
  11. wslee

    Radsone EarStudio ES100

    F/W v1.2.1 released - Minor bug fix on the mic. gain control - Increased max. crossfeed range - Added the buffer length control option - Auto reset on abnormal device freezing Although we've tried and added the buffer length control option, we found that the amount of latency that can be...
  12. wslee

    Radsone EarStudio ES100

    As we are obligated to pay VAT in the European market, the price of EarStudio has applied accordingly. For this reason, generally most of the items have the higher price in Amazon EU than in Amazon US. Your kind understanding would be appreciated. Thanks! WS
  13. wslee

    Radsone EarStudio ES100

    Thanks for the comment, As you noted, ES100 2.5mm pinout is same as all the Astell & Kern devices, which is de facto standard. Regards, WS
  14. wslee

    Radsone EarStudio ES100

    You're referring the block diagram which introduces the DualDrive technology. The 2.5mm jack 4-pin layout of ES100 is same as all what Astell & Kern devices have. (de facto standard) No difference at all.
  15. wslee

    Radsone EarStudio ES100

    We've been working on the system freezing issue, and the next F/W update would have reset on frozen. Assuming every corner case, we hardly can prevent the system freezing. But at least we may able to reset the system after a few seconds after freezing. We'll release the next F/W update early...
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