Hirose to 4-Pin adapter cable to run balanced headphones out of the iBasso Toucan. I do not want to get excited but it has been driving the K1000 for the last one hour or so. I will take the combo to the Tampa Meet, for now I leave you with a couple of pictures. Cheers. Note, the volume pot goes from 7 o'clock to 5 o'clock and I listen with the K1000 anywhere from 10 o'clock to 1 o'clock depending on the song.