Big thanks to the folks at FiiO for sending me this demo unit, which is their newest iteration, the E10K Olympus 2. I am not being compensated by FiiO for this review in any way. I’m simply giving my impressions of the Amp/DAC. Read on to find out what I thought!

<< If you enjoy this article, please consider sharing!! It really helps the site get noticed and is much appreciated 🙂

Updated 10/20/2018

  • 2,742 word post, approx. 5-6 min read.

Hey there friend, and Welcome aboard!!

Before we get into the FiiO E10K USB DAC Review, grab a snack, sit back and relax because..

You’ve come to the right place!!

FiiO E10K USB DAC Review
FiiO E10K USB DAC Review

What I will bring you in this review

Table of Contents

Click any of these to navigate the page!

Why Should You Trust Me?
Build Quality
Features & Usage
My Video Review
Photo Gallery
Final Grade

Now without further ado, let’s get rolling!!


In the world of Amps and DACs, Amp/DAC combos, separate amps, separate DACs, and all of the options available, one thing becomes clear if you’re new to the hobby:


Wow. That was an oxymoron if I’ve ever heard one.

It’s true though: companies, people, bloggers, reviewers, and the whole slew of the information age has actually contributed to humans being more lost than when they started!

There’s simply too much to choose from nowadays. Buy this, not that! My amp delivers optimal sound quality! That one is OK, but mine is the ultimate! If you live in America, there is an over abundance of EVERYTHING, yet people are as depressed as ever.

I promise this wasn’t intended to get philosophical, but bear with me.

There’s an over abundance of Food. Lysol spray. Laundry Detergent. Coffee. Smart phones. Laptops. Hand soap. Deodorant. Toilet Bowl Cleaner. You get the idea.

It’s like when Bubba explains Shrimp to Forrest at 1:17. Haha.

I legit have 15 cans of Lysol in my apartment simply because I can (HAHA! No pun intended). It may sound ridiculous, but guess what? It is. Haha. I’ll never have to buy another can of Lysol ever again though! Lol. Don’t ask me why I did that. I was having a weird day in 2015 while Christmas shopping. Now it’s years later. And I still have Lysol. Ok I’m done.

With all that said, there is also an over abundance of Amps.

Big amps, small amps, versatile amps, USB amps, non-USB amps, Amps that sing you a lullaby. Amps that don’t. Amps that come with a side of fries. Amps that don’t lie. Amps that brew you a cup of coffee. Amps with Toffee. Wow. It’s like lick-able wallpaper.

The snozberries taste like snozberries!

It’s just too much.

If you’re a newcomer to the hobby, or a budding audiophile, it can be hard to decide which amp to buy.

Fortunately for you, I’m here. My main job is to sift through the madness and find out what’s good and what’s not. What can be held on to and what can be discarded. I don’t claim to have all the answers. I don’t claim to have the most experience. But I have a lot of experience with various equipment, and I know what sounds good and what doesn’t.

Back To Top


Why Should You Trust Me?

Because I know what I’m talking about. I haz an education!

Lol. I’m being funny but I’m also serious.

I don’t have fancy credentials like some people (and I don’t think that automatically means you’re legit by the way), but like Craig Boyles said about me on his website Mage Audio,

“Stu knows headphones. He’s reviewed over 70 of them on his website.”

I’ve been a headphone enthusiast for as long as I can remember, ever since I had a pair (or 8) of Sony MDR V150’s. I’ve loved music and everything about it for equally as long. I’ve been making and producing music for over 10 years, and have learned a lot about EQ and sound a long the way. I’ve sold beats, I’ve given them away, I’ve collaborated with a lot of people, and I’ve had a lot of fun.

I’ve had plenty of experience with high end amps, entry level ones, and anything in between. I don’t claim to know everything, but do I know what sounds good and what doesn’t. I know what’s worth your money and what can be glossed over and discarded.

See what I’ve demoed on my Reviews Page!

I also know how and why stuff works..

Check out my Resources Page for more helpful information!!

The Main Reason

The biggest reason to trust me is that I’m just like you! I do an exhaustive amount of research before I purchase anything, and don’t stop searching just because I own a product. I keep up with trends, reviews, blogs, and stay immersed in this niche because I’m truly passionate about it and care a great deal about it as well.

My Goal is to Help You

In addition that, I receive emails, comments, and testimonials fairly frequently from people thanking me profusely for what I do here, and for making such great recommendations specific to their need. It’s refreshing to be able to connect with people from all over the world and help them make the best decisions possible with regards to studio equipment and anything music production related! I truly love and enjoy conversing with you all, because I’m passionate about this stuff!

Click to read some Testimonials! (at the bottom).

Lastly, I’m truly a genuine person and have fostered relationships with a lot of the people that frequent my blog and YouTube channel. In other words, I’m not a faceless corporation or even a faceless blog. I respond to all emails and comments, and value true interaction with people. Peruse my YouTube channel, Instagram feed, Facebook page, Soundcloud page, or any comment thread on my blog and you’ll quickly come to realize that I’m truly here to help in any way I can.

Check the links to the right and connect with me!! >>

Learn more about me:

Other credentials

  • Bachelor of Fine Arts, Graphic Design – Western Carolina University (2010 – 2013), 3.2 GPA
  • Best in Class for Painting – Western Carolina University – Spring 2012. See the painting here on my other site!

If you have any other questions, let me know!

Back To Top

With that let’s get into the meat of this thing!

FiiO E10K.


  • Price: Check on Amazon! | Check eBay!
  • Capability: Handles PCM Files up to 24-bit/96 kHz.
  • Stereo Crosstalk: > 70 dB.
  • Outputs: 1x Coaxial, Line, 1x 3.5mm headphone jack.
  • Output Impedance: 1.04.
  • Output Power: 200mW@32Ω
  • Output Voltage: 7.39Vp-p.
  • Inputs: 1x Micro USB.
  • Signal-to-Noise Ratio: >105dB.
  • THD at 1V output: <0.006%@1KHz.
  • Frequency Response: 20Hz -20KHz.
  • Dimensions: 79mm x 49.1mm x 21mm.
  • Weight: 79 grams.
  • Warranty: 1 year.
  • Power: Bus powered.
  • Features: Bass boost, Gain switch.

Back To Top

Let’s get into build!

Build Quality

The Build of the E10K is exceptional for an Amp/DAC in this price range or otherwise. Holding it in your hand feels solid, and I even dropped it on a hardwood floor by accident!

The brushed aluminum chassis held up remarkably well, and I was able to resume music listening in a snap without freaking out and having to pay FiiO for a broken amp. 😛

In addition to that, the volume knob, bass boost switch, gain switch, and headphone jack all feel very rugged. The volume knob in particular has a satisfying click when you turn it on for power.

All inputs are of a high quality here.

The only minor concern was the micro USB jack. It feels a bit Piggly Wiggly at times, or jiggly. Like Jigglypuff. Thankfully there’s no effect on sound and I’m not finding it cutting out or anything. Still something to keep in mind.

Design wise, FiiO hit this one out of the park!


Back To Top

Let’s take a look at some of it’s features..


The features of the E10K were touched on above.

It provides a gain switch and bass boost, both of which come in handy.

The gain switch is great for more power hungry headphones like an HD600 or 650, while the bass boost adds some oomph if you desire a bit more low end.

Both do their respective jobs in a very tasteful way.

For instance, I have the HD650 plugged in to the E10K at the moment. Without the gain switch or bass boost, volume reaches an acceptable listening level at max volume (8), and sounds very pleasant. I don’t feel the need to turn it up anymore, but I desire to because I like to live life on the edge. Lol. Not really. I’m just a writer man.

Learn more about the #2 Gold Standard: Sennheiser HD650 Review!

So I want more volume.

Whatever will I do?

Turn that gain switch on, baby!

With the gain switch on, I like the volume between 5-6. It provides just the right amount of extra zest. I do not, and should not push it to 8. We like to live life on the edge, but in moderation. This isn’t a metal show, friend.

Learn more: The Best Headphones for Metal

With the bass boost on, you can push it a bit more. The extra emphasis tames the mids/treble a bit to where you can comfortably dial it to about 6-7.

Loveeeeeee that gain switch!

A lot of this will depend on the song, how well it’s mixed/mastered, the quality of the file itself, etc. But those figures above are about right and provide a nice range of what you can expect with something like an HD600/650.

Learn more about the#1 Gold Standard: Sennheiser HD600 Review!

The E10K is also very versatile as well. Let’s take a look at some of it’s other uses.


You can use it as a standalone DAC using the line output, as a USB headphone Amp, and also as a USB to coax converter.

Standalone DAC

With the Objective 2

Basically, I can use a separate Amp like the JDS Labs 02 with the E10K. I would take a 3.5mm to 3.5mm interconnect cable such as this one, and plug it into the line out on the back of the E10K. The other end plugs into the front of the Objective 2 and voila! It’s a stand alone DAC.

With the Magni 2 or 3

I can also use the E10K as a DAC and hook it up to my Magni 2 or 3. You would simply use an RCA to mini cable such as this one. Plug the 3.5mm cable into the E10K like before, and plug the RCA males into the back of the Magni.

As a Converter

Also, some DACs only have coax and Toslink capabilities. If your computer doesn’t have those, you can use the E10K to convert the signal from USB to coax and then connect the other DAC to the E10K.

For Gaming?

I also came across an amazon review that claimed you could plug this right into a PS4 and use it for Gaming. I was surprised to find out that it is indeed instantly recognized and you can plug your headphones right in.

The only issue is that the volume isn’t loud enough even turned all the way up with the gain switch ticked (using high sensitivity headphones as well). I imagine this is because it’s not receiving a dedicated power source. The solution to this would perhaps be to use one of these coax to optical converters, but I have yet to try it out.

Given how versatile and valuable the E10K is, I think it’s definitely worth trying it with a converter and I will update this article once I have done so. Even adding the cost of the converter, you’re getting a potentially great gaming rig for under $100. Stay tuned for future updates (Bookmark the article!)

All in all, pretty impressive for such a small and inexpensive unit!


Back To Top

Wish it could be used with a phone, so I docked a little off. No big deal though.


Is the E10K efficient at what it does?


I would say it’s extremely efficient. The E10K powers 99% of headphones with relative ease. I would steer clear of anything over 300 Ohms, as I don’t think it would suffice.

For virtually anything else, you’re golden.

The FiiO E10K Olympus 2 features a new and improved LMH6643 chipset that improves upon previous versions by supplying even more power, and a better overall transient response.

It’s super quiet too. With no music on, the noise floor is very low and I hear no audible ambience or white noise.

This is an Amp/DAC that requires no extra batteries, as it’s powered via USB to your laptop. It’s the perfect small desktop Amp, but also works incredibly well on the go.

Like the Audioquest Dragonfly Red, I can pack it up in my laptop with zero hassle. It’s very portable!

Unfortunately, you cannot use it with your phone, so if you need something for that purpose I would recommend the Dragonfly Red.

Learn more: Audioquest Dragonfly Red Review!

The E10K is an Amp/DAC meant for Laptops and Desktops, but it’s very versatile.


Back To Top

With that, let’s take a break!

My Video Review

Please don’t forget to like, comment, and subscribe to my growing channel. Any support is much appreciated! 🙂

Check out the photos..

Back To Top

Click to see the E10K!

Back To Top

How do they sound?


The best part of the E10K is the crisp, neutral, and honest sound it provides.

As of this article, I still run an old Lenovo T510 laptop, and the internal Soundcard is pretty poopy. What is a Soundcard?

A poop Soundcard suffers from all of your typical crappy problems: Low volume, noise, interference, etc. The E10K is the perfect solution for those looking for an upgrade from that type of dire situation.

See what others are saying about it!

It seems to add clarity, dimension, a bit of extra Soundstage, and improves upon dynamics and speed (known as transient response). You’ll likely be floored by the improvement, and may not upgrade for quite awhile (if ever)! What is Soundstage?

Simply put, the sound is very immaculate and likely to impress you to a startling degree. I’ve heard plenty of headphone Amps, and the E10K really holds it’s own against some of the higher priced models.

It faithfully stays true to the incredible sound of the HD650. Timbre, resolution/clarity, great imaging, and warmth are all hallmarks of a great sound, and the 650 doesn’t fail to deliver. The E10K does a fantastic job of sticking to the script and not altering the soundscape in any way. What is Timbre?

Any Amp/DAC under $100 that can do this deserves high praise and is most certainly worthy of my money.


Back To Top

With that said, what’s my Final Grade for this little beast?

Final Grade

I have to give the E10K a perfect A+. The only thing I would change about it is making it compatible with a phone, but that’s it. There’s nothing else about it that disappoints me in the slightest.

It does exactly what it’s advertised to do, which is to provide an upgraded sound from your Laptop or PC’s crappy signal. It also works phenomenally well on the go, as I’m sitting here typing this away from home on my laptop and listening to Spotify. It’s portable, convenient, and extremely versatile as well, with an almost impeccable sound and excellent build.

There’s not much else to say about this little buddy..


Back To Top

Well that’s about it for today my friend! I hope you’ve enjoyed this FiiO E10K USB DAC Review.

Questions? Comments? Requests? Did I miss the mark on something? Please let me know down below or Contact me!!

Marvin, what do you make of all this? I would love to hear from you. Until next time..

All the best and God bless,





Can’t decide which headphones to purchase? Interested in a complete buyers guide outlining over 40 of the best options on the market? Click on over to the best audiophile headphones to learn more!!

Be sure to also check out my Reviews and Resources page for more helpful and informative articles!

Back To Top


Add a Comment

Your email address will not be published. Required fields are marked *