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Radsone EarStudio ES100

Discussion in 'Portable Headphone Amps' started by m4rkw, Dec 12, 2017.
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  1. jasonb
    How loud do you listen? I'm really expecting it to be plenty. I listen pretty quietly.

    According to my radio shack sound level meter I listen at about 80db. It only takes .5mWatt to get a Q701 to 85db.
     
    Last edited: Oct 10, 2019
  2. peter123
    I've got no idea but not very loud I believe as I've noticed people very often turn up the volume when they try my stuff.

    The subbass is not as impact ful as with some giga mega powerful amps I usually use them with (mostly the Burson Conductor V2+) but perfectly adequate for background music when working or reading, at least for me.
     
    jasonb likes this.
  3. jasonb
    Gotcha. I'll find out tomorrow I guess, but I think I'll be happy with it. I've been happy with Galaxy Buds and a Bluetooth M50x lately, so I'm not that critical anymore.
     
    Last edited: Oct 10, 2019
    peter123 likes this.
  4. jasonb
    So I've only spent about 5 minutes with it so far, but I can say already that it's enough power for my needs and it seems to sound great. Using LDAC but just with Google play music which is 320kbps aac.
     
    scotvl and Slater like this.
  5. Outrager
    Does 2x current mode use noticeably more battery compared to 1x?
     
  6. jasonb
    It's sounding great with the Q701. I don't listen very loudly though. I've had the volume between -20 and -15db which is about 80-85db. With LDAC it's sounding clear and extremely detailed, and the bass sounds right where it should be. It's not weak or rolled of or anything from a lack of power. I shortened an extra cable I had laying around and attached the ES100 to the Q701 with small pieces of Velcro. It seems to be holding, but I might add a zip-tie or two. It may not look the prettiest, but it works.

    IMG_20191011_215145.jpg

    IMG_20191011_215237.jpg
     
    bidn, scotvl, kukkurovaca and 9 others like this.
  7. serwei
    Yup, in summary, but only if the headphones need it. On my Ananda I'm usually around -12db volume on 2x mode. This burns about 10-15% batt per hour on average.
    If it sounds like a vague answer it's because of many factors involved, so it's a bit qualitative. If the headphones don't suck power, even at 2x the same headphones will draw similar battery, than another less sensitive pair like my Anandas. Hope I make sense.

    Adding on, balanced has a 2x mode too, but they state double voltage but it's the same principle as 2x current. So this allows thirstier headphones to drink more. So the part about risk of damage is that you can supply too much power to sensitive headphones at high output. So when trying out 2x, start at low volume.
    I feel 2x makes all headphones sound better for fast music, because the drivers are backed up by more power (google on signal leading edge, skew, etc). But sensitive headphones need it less, and risk getting blown.
     
    Last edited: Oct 12, 2019
    Slater likes this.
  8. Outrager
    Thanks. That makes sense.
     
  9. Chupi383
    I understand how 2x mode works in unbalanced mode: there's 2 DACs feeding each channel. But balanced mode necessitates 2 DACs per channel in order to supply a + and - version of the same signal, so unbalanced 1x mode is already using all 4 DAC outputs. Did we ever get any official word on exactly what balanced 2x mode does? Does 1x just cut 6 dB off the top to prevent blowing out sensitive headphones?
     
  10. jasonb
    This thing sounds great. A great pairing with a bass modded Q701.
     
  11. G_T_J
    Took the plunge and got one off Amazon instead of buying it from the ridiculous so-called Drop.
    I'm very happy so far and going to do extensive comparisons with the BTR3! Happy days :)
     
    scotvl, Alphasoixante and emeline like this.
  12. progdvd
    I sold my btr3 as soon as I received ES100. No comparisons there.
     
    scotvl likes this.
  13. G_T_J
    For me BTR3 is cheap enough to justify keeping them both, at least at this stage...
    Plus BTR3 (or whichever proves weaker between the 2) can easily become a permanent component of car's audio system :)
     
  14. Slater
    The app itself explains the “official word”. Balanced 2x doubles the available voltage.

    1133D63B-8198-4AC7-84D4-277C72B4A23D.jpeg
    C1B7A3B7-E9D9-45B2-9317-1D631B76F43A.jpeg
     
    Last edited: Oct 13, 2019
  15. Chupi383
    Yes, but I mean how does this happen? In unbalanced mode, extra current is added by putting another DAC in parallel. But in balanced mode, all I can think they could be doing is pumping more juice out of the same number of DACs.
     
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