The M Duo's treble isn't especially harsh, but it is a little edgy and aggressive.  Not an earphone for the treble sensitive, but at a reasonable volume it's fine. 

  I'm probably not the best judge on this since I don't sleep with IEMs in.  However, I tried doing so last night with the JVC's.  They didn't fall out, but when I rolled to my side it did put a little pressure on my ear; not to a painful level, but enough to become a bit annoying.  I'd...

I own both. The M Duo has a similar sound to the JVC's but I find the Duo's to be more aggressive all around. The JVC's are not bass light but the Duo's hit harder on the lows, sounding more impactful. I personally find the Duo's a little more mid recessed and both can be sibilant at high...

Looking for a new IEM to use with my phone, since that's likely to be my primary source for on the go listening from this point forward.  I really enjoy my JVC FXT90s, but they don't have a mic and while they sound quite fine running through the amp hooked to my PC, they sound a bit piercing and...

For anyone else that's been thinking about biting on these, they're $39.99 for St Patty's day weekend with the potofgold coupon code @ meelec.com.  Well worth it that price!

  There is some sibilance.  Personally in my case it isn't overbearing and it never sounds overly harsh, but if you're very sensitive to sibilance you'd likely do well to consider other options.  Sadly I don't quite have the experience to make a wide range of recommendations here, but it sounds...

The bass on the M-Duo is certainly more impacful.  I don't know if the actual quantity is greater or not, but the perceived power is definitely higher imo.  I don't know if it would do for a proper basshead, but for just about everyone else it should be more than strong enough.   I guess the...

Got the CAL 2's some time ago.  My first pair, unfortunately, was a dud - I'm not sure what was wrong, but the left cup never sounded as if it had a seal.  Bass depth/impact wasn't there and somewhat shrill...definitely not what I was expecting!  Very frustrating considering the same thing...

Sounds excellent.  I'd been considering the original CALs for some time; my only other full size headphones are the Panasonic HTF600's and Ultrasone HFI-580's.  I like the sound of the 580's, but I've never liked the long cable, nor do I find them particularly comfortable since they have a tight...

  The JVC FXT-90 is another option in that range with a sound similar to what you seem to want.  Strong and impactful(but far from overwhelming) bass, sparkly treble with no real harshness and a midrange that doesn't give up much emphasis either.  Detail is supposedly almost on par with the...

How does the GR07 Bass Edition compare to the JVC FXT-90?

Yeah, at that price the Panasonics are near unbeatable.  Strong, good quality bass and a pretty decent soundstage, likely due(in part) them being semi-open headphones.  Clarity is solid too.  The only downside is the treble is a bit grainy and not that refined...plus they are almost purely for...

  I own both the S4 and the M-Duo and the Duo comes out ahead in just about every category.  M-Duo has better clarity to my ears and retains plenty of bass impact.  The Duo is still a little bit sibilant up top but overall the treble still sounds better than the S4's.  The build quality is also...

  I can confirm this, my first pair had the exact same problem.  Meelec replaced them promptly and the new ones work fine, but it leaves me wondering if the first batch of these IEMs were prone to this issue.

How do the CAL's compare to the Panasonic HTF600's, specifically treble wise?