Here we are comparing Denon AVR-X3700H vs Denon HEOS AVR to reveal their common strengths and weaknesses. The AVR-X3700H has 9.2 channels amplifier and the HEOS AVR 5.1 channels. Only the AVR-X3700H has a Dolby Atmos support. DTS:X is supported only by the AVR-X3700H. We have evaluated both AV receivers, AVR-X3700H has an overall score of 8.8 out of 10 vs 4.8 out of 10 for HEOS AVR.