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Radsone EarStudio ES100

Discussion in 'Portable Headphone Amps' started by m4rkw, Dec 12, 2017.
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  1. kukkurovaca
    Even if impedance is low, insensitive headphones may be difficult to drive. I haven't used the Q701 but plugging numbers into a calculator, I'd say that you might be pushing the ES100's single-ended capability, particularly if you want headroom to EQ. For comparison, my GT3 Superbass are a little more sensitive (going by specs) than the Q701 and I find them to sound a little thin using the ES100's single-ended output and EQing.
     
  2. jasonb
    I don't listen very loudly though which is what might make it work for me. A Hidizs Sonata HDII USB-C DAC dongle at half volume gets them loud enough for me and I think they still sound good on it.

    .3 volts and 1.42mw is what it takes to get a Q701 to 90db according to inner fidelity, and I definitely listen at less than 90db.
     
  3. kukkurovaca
    You may well be fine in that case, particularly if you don't need to EQ.
     
  4. jasonb
    No plan to EQ. I've already done the bass mod on them. If anything I may do a very slight amount of - EQ on the Q701's peaks, but no boosting of anything.
     
  5. megabigeye
    Found this quote earlier in the thread; I think it's from the Indigogo page:
     
  6. jasonb
    I need to order one from Amazon and try it. If it's not enough I could just return it since Amazon is easy that way.
     
    megabigeye likes this.
  7. kukkurovaca
    It's a great little device -- aside from the somewhat flimsy clip. : )
     
  8. jasonb
    I would probably Velcro it or something instead anyway.
     
  9. kukkurovaca
    8104402E-F50C-49FB-B129-658B610BE83A.jpeg
    Yep. Here’s mine dual-locked to a Ray Samuels SR-71A
     
    Slater likes this.
  10. Sebastien Chiu
    Anyone know how to get in touch with support for a replacement device? The 3.5mm jack failed yesterday and I can't replace through Amazon as I purchased it in May. Thanks!
     
    Noble Audio Stay updated on Noble Audio at their sponsor page on Head-Fi.
     
    https://www.facebook.com/NobleAudio https://www.twitter.com/noblebywizard https://www.instagram.com/nobleaudio https://nobleaudio.com/en/ contact@nobleaudio.com
  11. BenF
    support@radsone.com
     
  12. jasonb
    I just ordered one and I have a Q701 cable I can shorten so I can just attach the ES100 to the Q701 somewhere. Did next day shipping for $14 cause I'm off tomorrow and impatient. So I'll know how this works tomorrow afternoon. I'll probably use aptX HD since I just listen to music through the Google Play Music app. Excited to use my Q701 without wires.

    And I think it's going to be plenty powerful enough. I have a cheap $25 Bluetooth receiver (it's called "OT-Adapt) I got years ago for routing music into a motorcycle helmet that is loud enough for my Q701 even at about 60% volume. I'm sure the es100 is many times more powerful than this little piece of junk, and I'm sure it'll sound a lot better as well.
     
    Last edited: Oct 10, 2019
  13. peter123
    I'm trying it out right now and with volume at about 80% on the ES100 and my phone maxed I've got my normal listening level. Might be too little with quietly recorded music.
     
  14. jasonb
    With a Q701?
     
  15. peter123
    Yep :)
     
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