Denon AVRS730H vs Harman Kardon AVR 1510 comparison definitely makes sense.
A significant difference between the receivers in the number of channels, Denon AVRS730H has 7.2 versus 5.1 for Harman Kardon AVR 1510. Regarding power, then AVRS730H has such a W/Ohm ratio - 75/8 20Hz-20KHz, 110/6 1KHz when AVR 1510 has a power of 75/8 1KHz, 75/6 1KHz. The THD is 0.08% for the AVRS730H but 0.09% for the AVR 1510.
Characteristics of digital to analog converter (DAC) are different, 384 KHz/32-bit for AVRS730H and 192 KHz/24-bit for the AVR 1510. None of the models support Bi-amping. Sound transmission directly to the amplifier in Pure direct (straight) mode is not implemented in these models.
Only the Denon AVRS730H can connect to the Internet via WI-FI. Only the AVRS730H has Bluetooth support. Only the AVRS730H supports Spotify.
Only the Denon AVRS730H has support for High dynamic range (HDR). Compared AV receivers retain the quality of 4K 60p signal when transmitting from a source to a TV or projector. HDMI signal transmission in standby mode is implemented in each of the devices. Both competitors are not able to scale the HDMI signal. Dolby Vision technology found support only on the AVRS730H.
The Denon AVRS730H has 6/1 HDMI inputs/outputs versus 4/1 HDMI connectors of the Harman Kardon AVR 1510. The HDMI Audio Return Channel (ARC) feature supports both devices. Unfortunately, HDMI eARC is not available on monitored devices. Of the two receivers in our comparison, HDMI CEC is present in only the AVRS730H. The AVRS730H supports the protection of digital content of the standard HDCP 2.2, versus HDCP 1.4 in the AVR 1510. Receivers do not have a built-in phono stage for connecting a vinyl player. An ECO mode is only available for the AVRS730H. The setup assistant will help you configure Denon AVRS730H.
Only the AVRS730H has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the AVRS730H.
The Denon AVRS730H is better receiver in this comparison. Check Denon AVRS730H price