Here we show you our detailed AV receiver comparison of the Harman Kardon AVR 1510 versus the Onkyo TX-RZ710. The AVR 1510 has 5.1 channels amplifier and the TX-RZ710 7.2 channels. Only the TX-RZ710 has a Dolby Atmos support. DTS:X is supported only by the TX-RZ710. We have evaluated both AV receivers, AVR 1510 has an overall score of 4.2 out of 10 vs 7.5 out of 10 for TX-RZ710.
The Onkyo TX-RZ710 is better receiver in this comparison - check Onkyo TX-RZ710 price.