Very good cable in usual Sennheiser quality. Fits the HD620S perfectly and replacing the stock cable was a breeze.
What it brings, is more clarity, especially in treble region and an extended holographic image compared to the single ended cable. There is more energy in the treble, without it being fatiguing. The bass and the midrange are unchanged. Another big advantage is that now I can use my balanced headphone amplifier or DAC dongle.
It pairs wonderfully with Cayin RU7.
Delivery was super quick, as always with Thomann. Thanks!