Here we show you AV receivers comparison of Onkyo TX-NR555 vs Onkyo TX-RZ900 based on specifications, reviews and ratings. Both have 7.2 channel amplifiers. Both receivers have support for Dolby Atmos multichannel audio format. The surround sound technology DTS:X is supported by devices. We have evaluated both AV receivers, TX-NR555 has an overall score of 7 out of 10 vs 7.5 out of 10 for TX-RZ900.
The Onkyo TX-RZ900 is better receiver in this comparison - check Onkyo TX-RZ900 price.