Denon AVR-S540BT vs Denon AVR-S510BT comparison definitely makes sense.
Considered AV receivers have the same number of channels 5.2. Regarding power, then AVR-S540BT has such a W/Ohm ratio - 70/8, 90/6 when AVR-S510BT has a power of 75/8, 110/6. The THD is the same and is 0.08%.
Competitors' digital to analog converter (DAC) is identical to 192 KHz/32-bit. None of the models support Bi-amping. Sound transmission directly to the amplifier in Pure direct (straight) mode is not implemented in these models.
Both models do not have WI-FI support. Rivals from our review have Bluetooth support. Each of these units does not support Apple Music. Only the AVR-S540BT supports Spotify.
Only the Denon AVR-S540BT has support for High dynamic range (HDR). Compared AV receivers retain the quality of 4K/60Hz 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 AVR-S540BT.
Each receiver has 5/1 HDMI inputs/outputs. Only the AVR-S540BT supports HDMI Audio Return Channel (ARC). Unfortunately, HDMI eARC is not available on monitored devices. Of the two receivers in our comparison, HDMI CEC is present in only the AVR-S540BT. Both models support the standard HDCP 2.2. Receivers do not have a built-in phono stage for connecting a vinyl player. A voice control is not available. An ECO mode is only available for the AVR-S540BT. Both AVR-S540BT and AVR-S510BT can be configured using the Setup assistant.
None of the rivals equipped with Dolby Atmos multichannel audio decoder. The receivers do not support the surround sound technology DTS:X.
The Denon AVR-S540BT is better receiver in this comparison. Check Denon AVR-S540BT price