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Radsone EarStudio ES100

Discussion in 'Portable Headphone Amps' started by m4rkw, Dec 12, 2017.
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  1. Pricklyears101
    Aite my bad should have specified exactly which sennheisers and planars but i was just reading off previous posts so it's someone else's words not mine.

    I'm not trying to say that this little thing can power anything on earth, and i know planars generally require more power due to their design and of course they need dedicated amps to sound their best.

    Bottom line, it's supposed to be paired with iems for portability and will never beat a dedicated desktop setup but it's balanced out is surprisingly powerful for something so small so im curious about it's limits and that's where user experiences in the community comes in but i guess you cleared that up for everyone so thanks
    Last edited: May 9, 2019
  2. serwei
    Hi, this is in non-balanced mode?

    Still good to know, thanks, was planning to pair ES100 balanced with Aeon Flow Closed...
  3. peter123
    All are balanced except for the T50RP.
  4. abm0
    I don't know why people imagine "balanced" amps can pull extra power out of some parallel universe. For the same price a "balanced" or SE amp can offer about the same power, depending mostly on the design goals. Just look at the FiiO Q1 mk1 (SE) and mk2 (Bal): they have the same max. power output. "Balanced" headphone amps are not about higher power (like the marketing sometimes suggests), they're about removing the common GND between L and R, and getting better stereo separation (though some of them don't even measure better on crosstalk at the Bal output vs. the SE, at which point you have to wonder what benefit is even left for Bal to be worth it).
    Last edited: May 10, 2019
  5. docentore
    I can tell you why. For 2 reasons:
    1. Because each channel has its own amp
    2. Tech specs sheet from the manufacturer says so. There is no reason for Radsone, or any other manufacturer in this market, lie on such thing :wink: But seriously, why would they?
  6. abm0
    Irrelevant. For the same price you can make a "bigger" SE amp instead of two "smaller" ones, and have the same power. You can't get extra power out of magic incantations, it comes from extra hardware that costs more.

    No it doesn't. Tech specs don't tell you how much power you're getting per dollar. But the marketing sometimes says you're getting more power "because it's balanced". That's mostly false. If you're getting more power it's usually because more expensive components were used, whether it's "balanced" or not. And the ES100 confirms this rule: it's more expensive than competing products that offer less power.
    Last edited: May 10, 2019
  7. docentore
    Please explain what do you understand as "Output RMS power".
    You can quote wikipedia if you want :wink:


    EDIT: let me put it this way. It doesn't matter whatever the rule re se/bal power channel.
    ES100 outputs twist as much power in balanced mode than in single ended.
    Last edited: May 10, 2019
    peter123 and Jearly410 like this.
  8. abm0
    It's funny you should ask that and post that exact picture. What does physics say - is power measured in volts or in watts? :wink:

    It does matter, when people misunderstand that and go around expecting a balanced amp the size of a USB stick to power T50RPs. :) That's when it becomes necessary to remind everyone that power correlates with amp price far more than it does with balanced vs. SE architecture.
  9. gefellmics
    One Question about the ES100 App: is there any chance to use one of the many fixed EQ-Settings for another Pre-Set? There are only 4 Presets for Custom-EQ, but I have few more headphones which I would like to use....I don't need all this factory settings.
    Any ideas how I can overwrite the factory settings??
    Last edited: May 10, 2019
  10. docentore
    Watts, but to remind you -
    you have R in load (headphones)
    well, no one shoould expect proper power going to T50RP from small dongle, agreed.
    manukmanohar likes this.
  11. peter123
    What's your point again, that a single ended amp may output more power than a balanced one? In that case congratulations for bringing us these breaking news.....
  12. Broquen
    This is not always true. Nowadays less than ever before. ES100 provides more juice than quite others more expensive.
  13. abm0
    Of course tech evolves over time, and of course there are exceptions even in the same generation, because the primary influence are the design goals. One could make a DAC/amp for the price of the ES100 with ridiculously low power but with diamond glass covering or whatever, and most of the price would be in the diamond glass. :) But the point is in general you shouldn't expect a balanced amp to offer OMFG-amazeballs output power compared to everything else in its price class because it just won't. Power stays well correlated to price class, even for balanced amps.

    But you have made me curious though: what more expensive devices have less power than the ES100?
  14. ClieOS Contributor
    Plenty of examples can be found on many A&K or Sony's high end DAPs. Under 32ohm load and THD<= 1% condition, AK380 is 66mW (unbalanced) and 8mW (balanced), SP1000 is 28mW (unbalanced) and 42mW (balanced), WM1A/WM1Z is 34mW, and ZX100 is 9mW. In comparison, most higher end (but often cheaper) Chinese DAP can pump out well over 100mW, if not over 200mW under the same condition.
    manukmanohar and monsieurfromag3 like this.
  15. keoki
    Noob question...

    Is it possible to save the EQ settings on the es100? Everytime turn off/on the es100, the EQ is at flat and I have to set it again.
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