[GrooveWarrior]

I have about $300 put aside for some fun money, and wanted to ask for some opinions on what purchase would best upgrade my sound.
 
I currently have Grado SR-60's, and I usually listen from my iPhone, iPad, and MacBook Pro.  To preface, I really love the "Grado sound".  I also have the iGi earbuds.
 
Should I upgrade my headphones (225, 325), or should I get a headphone amp/DAC?
 
Opinions appreciated.
 
Thanks

 

[PurpleAngel]

  I have about $300 put aside for some fun money, and wanted to ask for some opinions on what purchase would best upgrade my sound.
I currently have Grado SR-60's, and I usually listen from my iPhone, iPad, and MacBook Pro.  To preface, I really love the "Grado sound".  I also have the iGi earbuds.
Should I upgrade my headphones (225, 325), or should I get a headphone amp/DAC?

 
The iPhone and iPad and Macbook Pro should be decent for driving lower impedance headphones.
 
Audio Technica ATH-A900X closed headphones, with Hifiman HE Velour ear pads.