Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: Can you adjust the mid-range or does it only have treble and bass controls?
Document: So easy. And the display is big enough to read if your eyes aren't what they once were. It just works well.The sound is very warm, has great detail and very good bass. I left the bass and treble settings at zero -- the stock settings. I read a review on Audiophiliac that said the sound was very like tube equipment produces. I'm big into tube stuff and I agree. It's great. I love it. No brassy, too bright sounds here.
Ipod/Iphone has no comparison to this fine product. There are no limit of which headphones you can used with this player. Anything from 10 ohm to 600 ohm are fine while with ipod/iphone you have to use an external headphone amp to play a high ohm headphone correctly. This device also have a separate treble & bass that you can control for different type of music. It also can play multiple music format FLAC, WAV, MP3, etc even better. Highly recommended for a complete music player.
Daft Punk's &#34;Random Access Memories&#34; sounds effing incredible. I mean, incredible. However, I couldn't get quite enough volume out of Floyd's DSotM without bumping the bass and treble levels (it still sounds incredible).Sabbath sounded great (FLAC rip of Paranoid). Zeppelin sounded great (FLAC rip of Zep IV). Glenn Gould sounded great. Bach's Toccata sounds great. Everything sounds great.
Never seen before this power in a mp3 player. cheap and reliable. im very happy with this fiio. Only miss the wide customisation of jet audio, specially for records when need some more o less punch . the fiio only let you work over one band on bass and another on trebles (waiting for the x5 for sure!) . i recomend with out hesitation this device. the relation between cost and quality is unbeatable . Sry for my basic english!
This player has everything, 72gig total storage, simple controls, easy to understand. I use sennheiser travel headphones ,The music is like your home stereo on yourEars. I highly recommend this player setup. You won,t go wrong.
If you are using headphones or earbuds that tend to color the music from manufacturers such as Bose or Sony, that tend to have woofy overemphasized bass, and somewhat recessed mids and highs, the effects may not be so noticeable. Other manufacturers that make excellent headphones and in ear monitors include Shure and Sennheiser.If you do buy an X3, the easiest way to make lossless sound files like WAV or FLAC is to rip from CD.
And I have a theory about buyinig sound equipment:  set your price range and don't listen to anything priced higher. There's always something better for a higher price. If your range is around $200, buy the X3. You'll like it.
The only music player in the same price range I've had that even comes close to the X3 is a ZuneHD, but Microsoft has all but dropped support for it, while the X3 continues to get firmware updates. If you like high quality music on the go, this is the DAP (digital audio player) for you.
The sound is quite neutral smooth and if anything a little warm, the dynamic range is also very good. If you are an MP3 user and want to know if this will do anything to improve your listening experience, it has the potential to do just that. You should realize that to be able to hear an improvement you need high quality headphones.
First, the addition of the 64GB memory card and cables for the same price as many others offer for the X3 alone is a no-brainer. This was a great bargain! The package was less expensive than a 64GB iPod classic and supports a broader range of audio formats.With that out of the way, the output from this little player is amazing.
Answer: Currently there is no mid-range adjustment capability (at least in the latest firmware version 3.0.  The cool thing about the bass and treble controls is that they are hardware based, directly adjusting the amplitude of both frequency ranges on the Wolfson DAC itself - not a software-based eq.  There is an older beta firmare (2.14 beta, I believe - very similar in design to the latest release 3.0, but implemented an extra software eq function that seemed to have a subtle effect on the sound