These are my version of taking Portapro's to the limit inspired by the excellent comments and posts made in this thread. I did the Kramer mod which is a great improvement, with plastic extensions to use the Grado ear cups (I bought some improved versions from eBay in Hong Kong) and changed the...

I ditched the black foam insulation on the outside of the driver as frankly I found it made the mid and treble dull. Same experience BTW with Wilson Watt Puppies but that is a very long story. Diffraction has very real benefits as I discovered, as well as drawbacks.   I then used damping...

Audio is my personal insanity - not my business! and I am well and truly quite insane.   I am using these phones with the Sony ZX1 and PHA2 that I bought from Japan and the MDR 1 mk 2's were bought while I was in Taipei for Christmas. I live in Singapore and these bad boys aren't available...

I did the 'Dynamat' modification to the MDR 1 MK2 and in my opinion it is worthwhile to do this. The bass is tighter and the bass transients definitely improved. Just tapping on the outside of the lined ear cup now produces a much 'deader' thump sound, rather than a hollow mass less...

I am modifying my Sony MDR 1 mk2's with acoustic dampening material tomorrow as per a previous mod on the mk1's - so far the mk2's have an additional layer of dampening material on top of the drivers I believe as I have removed the leatherette ear cushions.   I will update with what I find and...

Does the Mark 2 model still need and or benefit from putting dynamat behind the driver? I just bought a pair for use as portable phones which they are fine for but not stellar. I think a silver cable upgrade would help them.