Radsone Earstudio ES100 MK2 DAC/Amp
Radsone Earstudio ES100 MK2 DAC/Amp
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Product Description
Pocket-sized and engineered for performance, the second-generation Radsone Earstudio ES100 MK2 Bluetooth DAC/amp delivers impressive digital-to-audio conversion for Bluetooth devices. It's built with two high-quality AK4375a DACs and has both a 3.5-millimeter unbalanced output and a 2.5-millimeter balanced output Read More
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All of our reviews are from verified customers.
4.6
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23
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95%
would recommend to a friend
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bhalejos
24
Jul 7, 2020
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A wonderful small piece of audiophile technology
Just one word of advise to realise the maximum potential of this jewel: download all the documentation and apps from EarStudio's (Radsone seems to be phasing out their parent brand) website: https://earstudio.store/products/es100. This recommendation should be clearly displayed in the package but, perhaps appealing to the cleanliness and simplicity of its packaging, it is nowhere to be found. Also, remember this is the "MK2" version of the ES100 because the MK1 is, basically, discontinued and barely included on that website. What I loved the most about this DAC is it not only includes very advanced features, but they care to EXPLAIN the purpose of all those nitty-gritty details! They even have a very well developed music playing app which, in my taste, runs circles around the latest Apple's "Music" one.
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Would recommend to a friend.
Jul 7, 2020
headdok
30
Jan 6, 2020
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WOW. Great!
I have a chord mojo connected to Iphone camera kit with moon audio cable and a bluetooth transmitter connected to this device with Massdrop noble iem with upgraded cable, and the sound is stupendous!!
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Would recommend to a friend.
Jan 6, 2020
Gerken
4
Apr 28, 2020
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I can answer my own question. I got the radsone es100 mk2 and it's perfect for noble audio kaiser 10 for tracks where noise floor matter. It's really silent with sensitive iems. Much better than chord mojo. Mojo can push a bit more, but for iem i prefer es100.
Apr 28, 2020
D702C
5
Apr 29, 2020
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Agreed, I can think of no reason to run that setup other than wasting money.
Apr 29, 2020
munkew
37
Jan 9, 2020
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works great and very convenient
Arrival and Setup: I bought the ES100 so that I could use my IEMs more easily with my iPad Pro. I've got USB-C DAC cables, but this seemed simpler and the price was good. It arrives in a small box with foam packing and a short charging cable (microUSB) which is perfect. I charged it before use and the light went from red to green in about 20 mins (figured that meant it was fully charged. I read the quick start guide - pretty useless. Doesn't even tell you how to pair so I had to search that out on the web. Basically once you turn it on, if it hasn't been paired previously, it will go into pairing mode (the green light is blinking). Straightforward pairing from my iPad on bluetooth. Listening: I inserted my IMR Rah with a 2.5mm jack; it took a bit of pressure but went in fine. The Rah is normally connected to balanced output from Cavalli tube hybrid playing variety of sources from HD music to Spotify. Mostly classical and vocal. The ES100 DAC isn't bad; I had no problems listening with it, just not as open or detailed as from the Cavalli. Not complaining; I was perfectly happy listening to music using the ES100 for an afternoon. Seems to be a bit of burn-in required, as the sound seems to improve, but that could just be me getting used to it :-) Problems: The quick start guide needs a link to the full manual online. Otherwise what the colours and blinking lights mean is a bit difficult to decipher. Clip is useful but isn't tight enough - moves as I use it. I think I ran out of power after a few hours (wasn't measuring) and plugged the ES100 into a powerbank. Bluetooth and music went intermittent after that. Lights would flash (no idea what they mean) and I would lose music, then it comes back on. Gave up and just let it charge. Overall: Different (not better; not worse) than using a variety of USB-C DAC cables and adaptors (I've got a bunch of those) to the same IEMs. Will likely try them with other IEMs and maybe even fullsize headphones later. But it does what it's supposed to do, and I like them.
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Would recommend to a friend.
Jan 9, 2020
D702C
5
Apr 29, 2020
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I'm a big fan of my mk1 and use it in the car as well. That said, I don't think the changes are substantive enough for me to upgrade to mk2. I think what I'd be really interested in is a less portable solution, with a better housing.
Apr 29, 2020
bhalejos
24
Jul 7, 2020
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Totally agree: unless you go to Earstudio website, you are not realising how good this little beauty is!
Jul 7, 2020
PACoug
167
Jun 12, 2020
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Very good for the price.
Been hearing about the Earstudio for some tim and I’ve wanted to give it a shot with my many Mobile IEMs with 3.5mm plugs ever since phones lost their headphone jacks. I’ve tried the TWS dongles with both 2-pin and mmcx earphones and honestly for a $50 product they are brilliant even with flaws. However, this little tiny thing sounds so much better than a phone’s output or the TRN dongles that it’s easily worth the extra money and the aggravation of corded earphones. If you prioritize good sound this is about as good a portable Bluetooth headphone amp as you’re going to find until you get into multiples of the price. I have an SMSL DAC/amp with a separate power supply that sounds better with these mobile IEMs but you’re stuck in place listening to that. The Earstudio just does a great job in a tiny and ultralight form factor. Sound is better than expected with a smooth character that is rare in this price range. Good solid decoding of lossy Bluetooth audio right up to the highest quality AptX streams. Bass has authority and speed and rarely feels wireless. Midrange has plenty of smooth, listenable presence without honking or fatigue (with decent source material) and highs are well beyond the capacity of many good IEMs to reproduce. In the audible range the highs are just Goldilocks. Enough sparkle without the harshness or sibilance artifacts may experience with products in this category. Ok I’m heaping praise on this thing. My main quibble is that it has not built in functionality for the inline remote, mic and volume controls of many headsets. I’d like to see that in the future. You have to use the controls and mic on the unit itself. if you like good sound on the go without carrying around a mobile hi fi rig with a giant rubber band like so many hi fi addicts do, try this. It won’t give you the performance of a nice DAP and a good portable DAC/amp but you don’t need it to for this money. You can take this thing all over where you wouldn’t think of taking that fancy expensive gear. It’s got enough oomph to drive many over ear headphones sweetly, especially the lower impedance Beyerdynamics for example. It won’t rock your socks off with your HD650s but it will make chamber music or acoustic jazz sound great on them at reasonable volume levels. The Radsone Earstudio is my ideal balance of performance and portability. Once it gets more involved than this I just leave it at home but this tiny box has brought many great earphones back out of storage. if you don’t like wires and are happy with the sound of some of today’s TWS options the Earstudio may seem like a weird product to you. If you like better sound and have some nice wired earphones laying around not getting any love, it makes perfect sense. If you’re planning on using the Earstudio with the 2-pin or MMCX in-ears it was designed for, spend a little money for a solid balanced cable with a 2.5mm balanced plug. Even a cheap one sounds better than the SE cable that came with your IEM. I bought a $12 MMCX balanced cable and a $13 2-pin version from AliExpress and both of these cheap cables easily outperform even pricey single ended cables with the same phones on the Earstudio. Better channel separation, transient response, air, noise floor, bass response, overall coherence and slam. every earphone I’ve used in balanced mode has been much more engaging, musical and powerful than in SE mode. This product makes Bluetooth a viable option for me. As with all audio gear, your experience will differ from mine. You own different ears as well as different earphones. I recommend having the Earstudio on hand if you have a lot of pretty nice wired earphones laying about, especially ones with replaceable cables. It will bring those earphones back into your life. I have a beautiful sounding pair of Trinity Audio earphones I probably never would have used again. They are hard wired for single ended use only. They’re so good with my ears, I prefer listening to them over Shure 535s in balanced mode. Even though your experience will differ from mine, if you have any IEMs that were $200 or more, you will probably be delighted at the performance of this tiny, relatively inexpensive little box. I know other firms make things that do some of what the Earstudio does. But some are so expensive you don’t want to take them outdoors on the street or hiking or near water for fear of loss or damage. Radsone has packed good-enough sound and great functionality into a box you can take anywhere, and priced it for its mission. solid recommend.
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Would recommend to a friend.
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Jun 12, 2020
Cheetokhan
5
May 5, 2020
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Bring on the bass!
I just got this today and have only played with it a little bit, but it does solve my biggest problems with Bluetooth earphones so I'm a happy camper. I'm old. My hearing is not what it used to be. I need more volume. I need more treble. I like a lot of bass :) I own many Bluetooth earphones, but none of them can give me the frequency response I need along with the high volume I need. Some are too quiet. Some get loud, but distorted. Some have great bass, but no treble. Some just sound like crap. I purchased this ES100 MK2 Bluetooth amp along with the HE100 earphones in a package deal at Drop. I listened to the headphones connected directly to my tablet and they sounded OK. Not enough bass for me and a bit dull in the high end ( I blame that on my ears, not the earphones ). Then I listened to the HE100 headphones through the ES100 MK2 and boosted the low end and the high end around 4 dB using the app on my phone. I also depressed the 125 Hz - 250 Hz region slightly. What a huge improvement. Bass so deep it rumbles my brain. This solved my issue with frequency response. Then I started playing with the volume settings. This Bluetooth amp has independent volume control. You can change the volume on your source device ( phone, tablet, laptop, whatever ) and you can also change the volume in the ES100. The two are not locked together like some Bluetooth headphones. This allows the ES 100 to get far louder than I can tolerate. Also of note- with the bass boosted 4 dB and the volume as loud as I could take, the HE100 earphones never distorted or broke up. They handled the high power with no problems at all. There is just one thing I really don't like about this design. The volume buttons are on the side. The track forward and back buttons are on the other side. This thing is tiny and weights nothing, so you cannot just press a button without holding it in place somehow. The natural tendency is to place your finger on one side to support the unit and press the button on the other side with your thumb. If you do this there is a 50/50 chance you will change tracks when you wanted to change volume.
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Would recommend to a friend.
May 5, 2020
MusicIsGreat
190
Jul 26, 2020
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You must be in science, you described it so well that nah not my type of controls, instant dislike. :)
Jul 26, 2020
Endwar666
11
May 27, 2020
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Amazing tuning app for such a tiny cute device!
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Would recommend to a friend.
May 27, 2020
bhalejos
24
Jul 7, 2020
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Don't you hate they "forgot" to mention such wonderful app even exist? I know it's easy to find it online, but it should be very clearly labelled in the packaging! Otherwise, you're not realising the full potential of this amazing piece!
Jul 7, 2020
Epixal
20
Apr 26, 2020
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Nice Portable DAC/AMP - Until it isn't
Surprising sound quality for the price and form factor. Quality app for advanced controls definitely a plus. Edit: Left channel stopped working on 3.5mm jack after one week of light use. I really wanted to like this product but am discouraged that it failed so soon. Maybe I got a bad unit that slipped through QC?
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Would not recommend to a friend.
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Apr 26, 2020
h4tch3tt
7
Jun 5, 2020
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Best Bluetooth DAC/amp
the only real nock against the hardware of this is that it doesnt have usb-c yet. the software app is out of this world though. The extremely educational and powerful app is awesome.
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Would recommend to a friend.
Jun 5, 2020
myla
26
Jul 4, 2020
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Convenient
I bought this to replace my AUDIRECT BEAM PORTABLE DAC/AMP for the 2.5mm balanced output and the Bluetooth to replace the problematic BEAM cable and I'm quite satisfied with the outcome. The battery management has definitely improved and I can receive phone call a lot easier however the build quality could have been a bit better.
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Would recommend to a friend.
Jul 4, 2020
HaVoCTzu
235
Jun 26, 2020
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Excellent product
i’ve been buying these as gifts because of how good they are.
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Would recommend to a friend.
Jun 26, 2020
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