What The... Man you are complicated. The source is a CD player
Just joking..
Geesh guys...stop fighting. in my opinion best way is just clear out all extra equipent between source/amp and headphones..no dsp thingies or eq thingies whatsoever..use high quality cables..also powercables!..keep the rig on for a night...get up..eat breakfast..so u brain has the time to equalize to being awake..and then sit down on a comfy chair and then listen..i believe no matter what electronics u use to determine whats best with graphs..ur mind and ears know best..i even found myself changing the balance on my 337 (has independent volume u for both channels) then an analyser measured as db's being best balanced volume levels...so that means my ears are a bit off in hearing the right balance..what i wanna point here is..at the end its ur ears that will make the decision..if u dont believe that then ur mind is fooling u..like placebo effect..u read the graphs so ur mind tunes itself into thinking its best..i know from own experience that that ****ed up mind of ours can sometimes be a factor of how u feel,hear or even taste things..check the tests of i think from pavlov and his controlled tests with giving food to dogs when using a lamp..at a certain moment the dogs showed saliva just because of the light..so eventhough he didnt smell or tasted the food..he reacted on the light...he did these tests also with kids..same result..soo..he proved that ur body can be tricked by ur mind. Sooo..imho..just listen and then feel the music..the sound that makes u smile the most..or in my case..after a long days work to relax me..well..u know the answer then