How does the kramer mod improve the sound?

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c_hibbs54
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Dec 18, 2019
I found a forum at this link, https://www.head-fi.org/threads/taking-koss-portapro-to-the-limit-cool-mods.277487/page-9 that user 'Babaatman' says, "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 band for the Parts Express $3.00 version - which I really love. I use the drivers out of the KSC 35's and some other Portapros I had around. The cables are one pair of OCC copper, one pair of pure silver and one of pure silver and silver with gold on the ground (not shown). All wires are 26 AWG as bigger wires cause problems with the retention clips at the driver.   They sound great! They do not play loud but they are super light and a joy for walking around and for traveling. I can't do that with my Orpheus!" I don't quite know if that answers your question, but I hope it helps. Do some digging! Have a good day!