Did you or Bootsy1 use any other headphone amplifiers than the pictured Fostex HP-P1? I wouldn't be surprised if a well suited desktop headphone amplifier does a better job.
I know by own experience that my Denon AH-D7000 does very well with my Grace Design m903. Others have reported the same with Denon AH-D7000/5000 + Grace Design m903/m902 (see appropriate threads). I wouldn't be surprised if Grace Design m903/2 do well with Fostex TH-x00 as well.
Your SigPros sounded grainy? just goes to show Ultrasone QA at its best :/
That said; my pair is perfect, no hint of any grain, i used to think they were too sibilant till i found out it was just bad recordings, some reports of them being too forgiving.
I auditioned a TH900 a while ago and I found the soundstage to be medium, on par with the SigPro
@above grainy means rough and unrefined. Grainy midsections are common in most lower end headphones. The T50RP and ATH-M50 are major offenders, the T50RP moreso.
Nice Review!
I am curious about that little tube amp, that WCA7..... can you give a little info on it as well? And what portable are you using with these?
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