Here we are comparing Onkyo TX-RZ3100 vs Denon HEOS AVR to reveal their common strengths and weaknesses. The TX-RZ3100 has 11.2 channels amplifier and the HEOS AVR 5.1 channels. Only the TX-RZ3100 has a Dolby Atmos support. DTS:X is supported only by the TX-RZ3100. We have evaluated both AV receivers, TX-RZ3100 has an overall score of 8.2 out of 10 vs 4.8 out of 10 for HEOS AVR.