There are no bench test data for the $800 X4300H but one can reference the two reviews linked below, one for the X4200W and the other for the X3300W, and can reasonably expect equal or better results from the X4300H.
http://www.audioholics.com/av-receiver-reviews/denon-avr-x3300w-1
https://www.soundandvision.com/content/denon-avr-x4200w-av-receiver-review-test-bench
Like the AVR-X4200W, it also has the same DAC (the best one used by D&M in recent years) as the one in the more expensive Marantz SR701X series. It is not as good as the one in the AVR-X7200WA and AV8802A but better than (specs) the TI/BB chips used in the other Marantz SR7000 series and Denon AVR-4000 series.
http://www.akm.com/akm/en/product/datasheet1/?partno=AK4458VN
For those who cares, it can play DSD up to 5.6 MHz (2 channel or 5.1 2.8 MHz) and has a phono input. It is comparable to the much more expensive Marantz SR7011, except it does not have the 7.1 analog inputs.
Even for those who are considering a 100 to 120 W integrated amp or stereo receiver, this AVR really could still be an excellent alternative at it's current price point. For my LS50 based two channel system, I am not going to pursue this AVR anymore because for even less money I could opt for the Dirac Live and likely get better results. I already have a minidsp, as well as the necessary amps that are collecting dust at the moment.