A CROS solution is often recommended for persons with single-sided deafness (SSD) or unaidable hearing in one ear. Oticon CROS is the first wireless CROS/BiCROS solution with dual-streaming capability using an open sound paradigm. As shown in this study, the dual-streaming capability, with the receiving hearing aid of the CROS solution simultaneously receiving sound inputs from both the transmitting hearing aid and an external source, provides considerable benefit.