May 26, 2021 · Dolby Atmos. Onkyo TX-NR676, TX-RZ610, TX-NR747, TX-SR393, etc have Dolby Atmos surround sound technology. What is the benefit of having Dolby Atmos? Same as DTS:X, Dolby Atmos supports height channels, which allows sound toe directly above the user’s head. However, Dolby Atmos is better than DTS:X.