[Jacky1028041]

Hi there, 
 
I am new to this forum. I am thinking about buy a Burson amp (with built-in DAC) for my K701, T50p and HD650. I am currently using apogee duet at the moment. Is it going to give me a big improvement?? (since it will cost quite a lot!!)
 
Or is there any other amps that are cheaper and better?
 
Source : iMac
Music format : mostly AIFF and WAV
music player : Audirvana
Music kind : I listen to all types of music.
 
Thanks very Much!