Hi, BigO.
I don't know if you're still looking for the answer on this one but there are a few differences between the two, primarily in that the TX-NR838 is an older model (2014) vs. the TX-NR747 (2015). Both models are capable of Dolby Atmos but the TX-NR838 adds the ProLogic IIz for front height channels while the TX-NR747 supports DTS:X. There aren't many titles out for DTS:X, yet (I can only think of "Ex Machina" right now) but you can check out what's on the landscape for DTS:X here, (http://www.nextgenhometheater.com/dtsx-blu-ray-movies/). Therefore, the TX-NR747 offers more 'futureproofing' vs. the TX-NR838. Both are highly rated but the NR838 will provide more sustained power to certain home theater loads based on its heavier, more durable power supply. The NR838 is 10 lbs. heavier than the NR747. Another big difference is that there are separate speaker binding posts on the NR838 to support Rear and Height channels, so you wouldn't need a multi-channel speaker selector on it like you do on the NR747. The last difference I'll speak to is with regards to the NR838 being able to control audio to 3 rooms (3 zones) vs. the NR747's 2 rooms (2 zones). Granted, there aren't many places where you can find the differences side by side but Audioholics (love that name!) has a good one here, (http://www.audioholics.com/av-receiver-reviews/onkyo-atmos-receivers). Keep in mind that they're comparing the TX-NR737, though, which I definitely wouldn't recommend as a good 'futureproof' solution.
8 years, 3 months ago
by
FDintheBurg
Fredericksburg, VA