I have the sol Republic v8 headphones and they trigger high impotence as well. Also have the b&o he earbuds from the promo. Absolute ****.. Cord looks like it should be off of a cheep pair of Maxwells and rarely, if ever, trigger high impotence..
Update: got high impedance to work.. According to someone in another thread, the jack can be covered in a light wax coating from the factory. Insert jack into port and twist back and forth for a little to work it off, maybe in an old phone or a device that you don't use the audio jack on. I did mine in the V20 only due to lack of anything else.