If you decide you need s bit more treble, consider cutting the padding out of the earcups. It really added what I thought they lacked from the beginning.

Quote: They were to rolled off in the highs for my liking, so I cut out the thick padding on the earcups.  I also spaced out the earcups with some tubing.  The last change was to add a silver cable.  Now they sound much better to my ears.  Actually, they are simply amazing compared to the...

I've had my er4p's for over 12 years and they are still the best phones that I have.  I wish they made full size though.  I would buy them right now.  I've gotten so used to their really flat response and analytical sound that everything else just sounds like it needs to be equalized to sound...

This was my initial thoughts also. I have sltered my view a bit after some burn in period and also eqing the mids down a bit. Now I'm fairly satisfied with them. However, I still marvel everytime I put on my modded monoprice phones at how close they get to the 400'S.

Re-subbed.

I highly doubt that you would find the 400's fatiguing.  To me, they are anything but fatiguing. 

If you like the Grado sound and the high end sparkle that they produce, the 400's are probably the wrong phone for you.  I haven't been overly pleased with the 400's after having Grado's and Etymotics.  I expected the ortho 400's to be able to give me that increadible hi-hat/cymbal sparkle and...

If you decide to sell, send me a PM. 

that very well may be it.  I will give them some more time.  Thank you for the feedback.

Quote: OK.  I guess I'll order the Schiit M/M combo.  I read several people say that they were efficient enough to be powered by an iPod or other portable player.      Quote: I never said or even insinuated that. Thanks for your help.

I just got my HE400 in this afternoon.  I have to tell you that I'm not very impressed.  The only substantial difference that I can hear is a wider soundstage than my moded Monoprice $20 phones.  The one huge drawback is that they just aren't very loud.  I have the iBasso D10 cranked all of the...

Quote: Sorry, I just had to have them.

Quote: Thanks for the tip!

I believe that is the one.  It is very thin but does a good job with the highs.  I am listening to them right now and they are pretty amazing.  Of course, I am feeding them pretty well.  (FLAC files through an Ibasso D10).

The silver cable I used was around $40 delivered. Sorry, I don't have a link. Most will think it crazy to spend more on the cable than the can, but after the mods, I quit reaching for my Grados and will sell them shortly.

I've made two mods to my pair so far and I am pretty impressed with these.  They are great straight out of the box however could use some help in the treble area especially at the very upper end.   1. I cut the cloth material out of the cups so that there is nothing between the plastic grill...