[LingLing1337]

Not sure where to go here. This is my girlfriend's setup and she says she wants better sound. The only thing I could think of, other than a sub, is a tube preamp. To go between the DAC output of the D2 and the amp in the AudioEngines.  Would this help with the sound?
 
Any ideas are appreciated

 

[trog]

Well am no audio expert but by better does your gf mean
 
a. More on the lower end freq?
b. Better/different Sound signature?
c Perhaps something built not just for near field but for HT?