Review on Bundle: Sony MDR7506 Closed Ear Headphones with Knox Gear Compact 4-Channel Stereo Headphone Amplifier - Professional, Folding Design (2 Items) by Ijad Hayden ᠌

I took a long cord and cut it to shorten it - I look - there each "hair" of the wire is varnished, so you can't solder them just like that. I had to carefully peel off the sandpaper and solder it like that. Then he wrapped the place of soldering so that the breaking forces did not fall there, wrapped it with non-shiny tape - it looks like a slight thickening of the wire, almost imperceptibly against the background of the spiral. And the main problem - the length of the wire - was solved. I did not check it on the equipment, but subjectively the sound quality did not suffer. I don’t know, maybe at high frequencies some wave processes are possible due to a jump in resistance at the place of soldering, but no matter how hard I tried, I didn’t hear them. Again, I'm not a professional in either music or electrical engineering. I'm just crazy about headphones, I take these ones home.