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Posts by commando

  I tend to trust my ears. The LCD2 gets a bit better with an amp, but it's not night and day, and the A900s are MUCH easier to drive than LCD2. My hearing seems pretty good, it's not like I'm deaf or anything - I was tested as having slightly better than normal hearing :)
I don't think an amp is required with these at all. I used the A900 non-X for years without an amp straight from a portable source and they worked great. I found little improvement when I used an amp, they're just super easy headphones to drive.
Have a read of this thread, all semi portable.
  To me the phrase "portable amp" is a contradiction in terms, so I'd rule the mad dogs out immediately. Momentum's are quite small and portable, but don't fold down, which mean they'd take up a bit of space in a bag on a plane, and I didn't like their sound much - with my phone source and not burned in. M500's are on ear, which I just don't like, and will block out very little noise. So to me for your usage Sony R1 or Senn Momentum, based on personal preferences.
I never said the channel imbalance was in all copies, that'd be crazy. It's just the drivers aren't quite matched in that pair. 
Double blind tests of high bitrate mp3 files with great headphones and expert listeners routinely show that mp3 files are absolutely fine. I think it comes back to people spending a bunch of money and wanting to justify their purchases to themselves.   I'm a very practical, perhaps slightly cynical engineer.
  Yeah that's why I said at the start this test was purely from an S4. The headphones could be quite different from a proper amp, though in my experience the difference is usually subtle, only occasionally do you get a marked difference. I think people hear what they want to hear sometimes, to justify what they paid for their equipment.   I listened to the Fidelo L1 in JB Hifi, a chain electronics store, plugged into their standard source. I wasn't impressed at all. But...
What's your budget for headphones?
  I reported what I heard with my own hears in order to help people who couldn't hear them all for themselves. You obviously disagree, though you haven't given any context, comparisions with other gear you've tried, it seems you just like to argue. Well, I'm done. If anyone has comments happy to hear them, happy to answer questions, but when you post to try to help people and get hassled that really puts you off trying to help people again. Maybe I'll report back after my...
Why do you want new headphones? A good dac/amp will probably make them sound better, and they're a really good headphone. You'll have to spend at the very least $300 to get anything comparable, and you might need to go to the HD800/LCD3 to get a significant step up. Both of those need a great source/amp anyway, so you might as well start by getting one of those for the 990s.
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