Regardless of if you like the song, Thrift Shop by Macklemore and Ryan Lewis is simply amazing on a good set of cans. There is just so much going on in that song. Lots of hidden details and voices. Also, pretty much anything from Infected Mushroom especially Never Mind.

Aeroplane by Red Hot Chili Peppers is good to test this solution.

SOLVED!   On your DAC, E7 or E11, shut off the USB charging option.  Worked for me.  Just found the solution on another thread!  Now I can finally listen to softer tracks.

AtkoBaka,   You have solved my issue that I have been scouring the web for sooooo long.  Thank you so much!!  Shut off the USB charging.  #fixmyE7

I have the crackle/popping issue with the E7-E9 setup.  Both Spotify high quality and CD.  I feel that it might be the USB ports on my desktop.  Maybe this unit is really sensitive to digital interference.  My sound card amped with my E9 is fine except the E7 has a better sonic signature and...

Adifer:  I have the same issue with my HD598 E7/E9 combo.  I'm waiting for Fiio to acknowledge this issue and resolve it.  I am in an email conversation with them at this very time.  Don't know if its a faulty unit or what.  Drives me freaki'n CRAZY!!!!  Tried all combinations and permutations...

Prizm...  Sorry about your cans,   My 590's are still rockin HARD.  You can find them cheap on ebay.  They are amazing cans.  I still switch between them, 598s and 580s on songs from time to time.  The 590s were my first real audiophile headphone and the sound is really hard to qualify.  I...

I just got the E7 and E9k combo shipped from Amazon last week.  Awesome results with the HD598.  Great deal at $159 shipped.  Perfect for 320k Spotify off the desktop too.

Audiophile is still about the music, guys.  Don't freakin forget about that!!!

When there are some songs that give you goose bumps EVERY time you listen to them!!!!!  Especially with great cans!   Latest bump producer----> Muse... Madness

I am in a love hate relationship with these phones and my HD590's right now.  I am still breaking these in.  The detail is awesome!  Sound stage and separation....  not as good yet.....  The main difference is the sound pressure on my head.  The 590s have very little to no sound pressure where...

 "you know you can't trust those Texas Aggies."  Pretty bold statement!  An Aggie does not lie nor cheat nor steal.  Nor tolerate others that do.     Who the hell is NMSU by the way??????  I have heard of a university at texas or somthing.

That's one nice pic!   This pair (like my HD590s) keeps getting better and better with use.  I need someone to force me to buy another brand of phones.  

Quote: Ditto...  It's my life by No Doubt is one hell of a quality mid's  showcase.  Produced very well.  I play this for friends that have never listened to quality headphones.  Always gets a WOW!  Sounds best on my HD598's.   Maybe it's me but I LOVE well crafted live recordings such...

Just got my 598's today!!  All I can say is wow!  Out of the box with a Hifiman 101 DAC, Awesome!!  I have HD600, HD590, and HD580's.  New to the boards but read over 45 pages of this thread before purchasing these phones.  This forum and other reviews have lead me to my new, all time cans...