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Radsone EarStudio ES100

Discussion in 'Portable Headphone Amps' started by m4rkw, Dec 12, 2017.
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  1. Kamurah
    B_Rich: I have one I use as a USB DAC (because honestly it sounds better than my RME Babyface Pro). However, I run mine off of a powered USB hub. Were you running yours off a hub or directly plugged into the PC?

    Have only had this for a short while....hopefully the USB implementation is not a cause for concern.

    On a separate note....I bought a 2.5mm TRRS cable for my HE4xx and am only getting sound out of the left ear when plugged into the ES100. I am thinking (hoping) this is a cable issue and not an issue with the unit. Unfortunately I don't have additional 2.5mm cables to test...nor additional amps that have that connector.
  2. rkw
    I've been using an ES100 for the past 6 months as a USB DAC into a MacBook Pro, and with Bluetooth on my phone. I go back and forth between the 3.5mm and 2.5mm output with different headphones. I haven't had any problems and I don't even do the output lock (too much trouble to open the app when I swap headphones). I make sure audio is paused or stopped when I plug or unplug headphones.

    One way to test your cable is with a 3.5mm to 2.5mm adapter. It might be useful to have this adapter anyway, so you can plug it into any 3.5mm output.
  3. Lurk650
    Getting a Little Bear B4-X tomorrow. Should be interesting to see how it pairs with the ES100.
  4. manukmanohar
    Anyone here using the ES100 with RHA CL2? If so, would like to know how much difference balanced made vs se out. Also, if using EQ, what was the EQ settings that worked for you?
  5. RodRevenge
    Hey Radsone listen to this man.
  6. Trapok
    Maybe the issue is on the PC? (Kind of short circuit with the pc usb port)
  7. rkw
    I don't want it to lock unless I set it myself.
  8. B_Rich
    I ran mine directly plugged into the PC. The PC is a pretty high end rig with a nice Seasonic power supply, so it's not like it's a cheap no-name. That's not to say the power supply or motherboard isn't the issue. They're just higher end components that shouldn't cause an issue like this.

    It's very possible.
  9. mhoopes
    It could be an option. Every time I change between SE and balanced, I manually unlock, change the output, and then manually lock. It would be handy if it did It for me when I change modes.
  10. Lurk650
    I've turned off a bunch of times when playing music, pretty much always do. I switch between ports at times, not while music is playing, and have had no issues.
  11. rkw
    I switch between SE and balanced, and I don't even use lock/unlock. I pause or stop the playback before I switch headphone. After the initial setup, I've hardly ever opened the app.

    I feel that this is a design flaw. It should not be possible to accidentally damage a product while operating it in a way that most consumers would consider routine. The ES100 is able to automatically switch output, but in the context of the overall product it is an imperfect implementation. Sometimes it really has to be perfectly foolproof or you have to go with something else. I think it would have been better to have a physical switch for the user to manually select the output.
    Last edited: Feb 12, 2019
  12. zolom
    Radsone, Please add an app selectable feature to automatically turn-off the ES100, after a short while where no input audio is detected.

    I did purchase two ES100s and enjoy them very much.

    Last edited: Feb 12, 2019
  13. mhoopes
    I too have done that, quite a bit, pausing in between. Doing it while powered down is another option. Unfortunately, the turn-on delay was reverted back to a 5-second press. So, it’s quicker to pause, but perhaps just a matter of time before I screw up and accidentally un-pause while changing over, with some particularly loud material.

    As for this being a “design flaw”, it was done for a reason. No free lunch here. What should be sacrificed to add the requisite relays: Impedance? Cost? Size? Battery charge life? All of the above would have been the answer.
    monsieurfromag3 likes this.
  14. Broquen
    Have noticed that if I pause the music and disconnect too quick the jack, sometimes the warning message appears too. Maybe using ES100 connected to PC there's a different behavior (cannot test now) and the message does not show or it is not apparent... Just guessing.
  15. RojoNinja
    Rowethren, B_Rich, jkpenrose and 3 others like this.
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