Here we show you our detailed AV receiver comparison of the Onkyo TX-NR555 versus the Marantz NR1504. The TX-NR555 has 7.2 channels amplifier and the NR1504 5.1 channels. Only the TX-NR555 has a Dolby Atmos support. DTS:X is supported only by the TX-NR555. We have evaluated both AV receivers, TX-NR555 has an overall score of 7 out of 10 vs 5.3 out of 10 for NR1504.
The Onkyo TX-NR555 is better receiver in this comparison - check Onkyo TX-NR555 price.