I have bought a pair of fischer audio dba-02 in early december, which I have used for three weeks with a sony 600 series mp3 player. After that, I have recieved a Hifiman HM-601 (with RE-0, which I have already bought) and started to put it in use this week. After reading many comments about the included EQ messing up the sound, I turned it off and started to listen to some music. Big surprise: where is the bass gone? It is incredibly detailled (using FLAC files on discs I know perfectly), the soundstage is well-defined, but the sound is quite bright with upper mids and treble being accentuated. Lower mids are very thin, and bass is very hard to hear on most tracks.
When I was using my sony DAP, I was using the custom user EQ to boost the bass slightly and also used the dynamic bass enhancer which worked quite well. Now, I had this problem with most IEMs I have used (shure e4, etymotic er4p) using various DAPs, and from the comments I have read on the forum the DBA-02 seem to mate quite well with the HM-601 without using the EQ. My question is: is there something wrong? Is there owners of the DBA-02 + HM-601 that can chime in and give me their impressions about the sound they get from the combo? Maybe burn-in, different encoding or something else can be done to correct the sound.