Planar magnetic alternative/upgrade from HD6XX

[Ken Tajalli]

yep, distortion only at the mentioned levels. The higher distortion level at 114dB is not enough to have audible compression.

Not many people show linearity plots or sweeps at 3 levels incl. 3rd harmonics (which is the tell-tale sign)

I re-checked, I can not see three "Frequency response" curves, I can see distortion curves alright.
Perhaps it has been done before, and concluded it is irrelevent, I stiill would like to see them, for education.
I agree, our ears change perception at differing levels.
My ears are still ringing after hearing Resolves sweeps.

 

[solderdude]

One should not listen to sweeps.

Amir measured distortion at 3 levels. Only posted a sweep at 94dB.
That one, incl. the distortion measurements, nor my own measurements, nor the fact that this is a planar, gives any concerns about possible soft clipping (compression) at low frequencies and higher levels.

 

[Hewbacca]

Read this thread with great interest, as I have HD6xx and want the next thing. I can't say its left me knowing if Sundaras would be better for me or not. I think I have safely confirmed that what I have is good enough and I am just wanting something new. I think realistically what I want is HD800S but am not really willing to spend that.

So I added a 7db shelf below 100hz to my HD6xx and now feel like I have new and exciting headphones

 

[RHO]

HD6XX is indeed very nice. The Sundara is just a little different and the difference is big enough for me to be very happy with my purchase. I would rate the Sundara over the HD6XX but not by a large margin.