“What is the difference between the Onkyo NR838 and Onkyo NR 747? Why the price difference and which one is higher end?”
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The NR838 provides more watts of total power than the 747, and is rated for 6ohm minimum impedence. Also, the 838 provides support for THX Select2 Plus audio technology which is a type of surround sound codec. It also has an onboard DAC which converts digital signal to analogue which can improve the quality of sound when using a pair of headphones or running the signal through a dedicated headphone amplifier. The additional power and extra features are likely the reason for the price difference between the NR 838 and 747 models. What is best for your situation depends primarily on your existing equipment and how you intend to use it. Depending on what type of speakers you have, the setup of your viewing/listening area, and your listening preferences you may or may not need the extra power. If your speakers are rated at 6 Ohms by the manufacturer you may want to lean towards the 838. If you anticipate using headphones or a headphone amplifier you may also lean towards the 838. Hope that helps.
Sorry, there was a problem. Please try again later.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.
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