That looks like a great app however I am using rockboxed sansa fuze. I wonder what are the eq settings for the preset.  

I own both P3 and P5, P3 sounds better to me imo. I would love if there were leather sealed pads for P3. Only problem is isolation for P3.

What kind of scissors did you use for cutting? I tried but foam was too soft to cut.

Quote: Can you guess a percentage about how much cable increases clarity?

Is it possible to use this dac without an amp to drive portable headphones? I will use it mainly with my 2.1 system(active speakers), but I also want to use it with my P5 and gr06 from time to time. Any chance it may harm the iems or headphones as it delivers lineout voltage?

How different is the sound reference to sm3 unfiltered?

I bought Hifimediy Sabre Dac, which has very good feedback here. I haven't received it yet to comment about it though. It was 50 $ incl. shipment

Anyone compared it to pfe? in terms of detail soundstage and character

Quote: I am glad it's useful

The idea is to put something hard in front of foam. I used a hard piece of paper anything would work. I inserted it between the foam and the body of the pad. No need to attach the pads upside after this.

Getting a hybrid custom near that price seems more logical to me.

re272 is a lot different than the others, treble oriented, sounding like armatures. I would say either jvc or ex1000 depending on your choice. Jvc is more like ie8 imo.  

You can also consider B&W P5. It is behind the others in terms of sq maybe but comfort and durability is the best of all.  

Quote: I cut a little piece of paperboard(any kind of hard thin stuff is ok) inside like this, then inserted it in pads cover foam at the bottom       See the difference between those 2     Foam at the bottom doesn't absorb sound waves (imo) in this way.

Anyone using M100 without amp? Is sq worth the price? Or M80 would be way to go?

I fixed highs with some modding of the pads. Good news is you dont have to cut at all. Just put a paperboard inside the pads between the foam and case. Detailed info is here http://www.head-fi.org/t/640163/b-w-p3-pad-mod  

You can check out my post about modding the pads, it helped a lot with the highs. http://www.head-fi.org/t/640163/b-w-p3-pad-mod

I have done a soft mod after reading about the improvement in trebles when you put the pads upside down. It was working indeed, however magnets wouldn't hold the pads. The problem was about foam absorbing sound waves especially in high frequencies. When you put pads upside down foam part doesnt...