The Marantz NR1509 vs Onkyo TX-RZ830 comparison will be extremely helpful for people who want to get a great, powerful receiver with many functions.
The number of channels for receivers is different - 5.2 versus 9.2, respectively, for devices. In terms of power, there are differences, the NR1509 has such a ratio W/Ohm - 50/8, 60/6, while the TX-RZ830 has a power of 180/6. A common feature for devices is the same total harmonic distortion - 0.08%.
The manufacturer installed different DACs, the NR1509 received the model 192 KHz/24-bit, but the TX-RZ830 is equipped with AK4458 384 KHz/32-bit. The Bi-amping function is implemented only in the Onkyo TX-RZ830. Both Marantz NR1509 and Onkyo TX-RZ830 can transmit an audio signal directly to the amplifier and bypasses any DSP processing.
These units have the same Wi-Fi modules. Each of the receivers has a Bluetooth connector. The contenders have differences in the supported services from Apple - AirPlay, AirPlay 2 versus AirPlay respectively. Access to the Spotify service is on each of the competitors. The number of available streaming services varies for receivers, the Marantz NR1509 works with Deezer, Pandora, TuneIn Radio, but the Onkyo TX-RZ830 works with Deezer, TIDAL, TuneIn Radio. The quality of 4K/60Hz signal remains unchanged when transmitting from a source to a TV or projector via HDMI for both receivers. Signaling over HDMI in standby mode can provide the NR1509 and the TX-RZ830. None of the devices can increase the resolution of the incoming video signal. Each of the participants of the comparison has a Dolby Vision.
The number of HDMI inputs/outputs varies depending on the receiver, the NR1509 has 7/1, and the TX-RZ830 has 7/2. HDMI Audio Return Channel is implemented in both devices. HDMI eARC is not supported by the NR1509 and the TX-RZ830. When comparing receivers, it becomes clear that each of the rivals can work with HDMI CEC. NR1509 and TX-RZ830 support the standard HDCP 2.2. Like most receivers, our models have a built-in phono stage for connecting a vinyl player. For voice control in the NR1509 is used Amazon Alexa, Google Assistant, Siri, Josh.AI, but in the TX-RZ830 is used Google Assistant. There is an ECO mode in NR1509. The Marantz NR1509 and the Onkyo TX-RZ830 can be properly configured using the setup assistant.
A Dolby Atmos multichannel audio format is available only in the TX-RZ830. Only in the TX-RZ830 realized a DTS:X surround technology.