My husband acquired deafness worsens, for 10 years, he used one of the first headsets of this brand, it no longer functioning, I wore my choice on the Sennheiser RS 400. He is delighted, stereo sound is perfect, it can move and keep hearing everywhere and is much higher than the previous because it includes everything much better by putting the sound all the way! As for me, it transforms my life and I can finally monitor programs with him is the high end, but with the life of this device, it is worth it!