Summary: Unlike some reviewers who found setup of the CR510 difficult, I found it quite simple and intuitive, particularly with the Marantz app to use in entering Pandora and Spotify usernames and passwords (though I'll admit trying to use just the unit itself for entry of that information was a frustrating joke). But with the app, I'm not sure how a digital/streaming receiver could be any easier to set up, frankly.
Summary: Bought this unit and it worked. For about an hour. Then it quit and started flashing the Red Dot of Death. Doing a bit of research, I discovered that there is a problem common to these units wherein an internal component fails frequently enough that you can research it quickly by an internet search. Solution? Don't buy this unit. Apparently, not all CR510's are bad, just enough to cause people to post negative things about it on the internet.
Summary: The one problem I have with this unit is it will not work with my android phone like it is supposed to. I called Marantz and the person I spoke with was not very familiar with the CR510 and also could not get it to recognize the android phone. Looking at reviews of the Marantz android program in the Google store others have this same problem. UPDATE: The unit can now be controlled up to a point by my android phone.
Summary: The receiver has some great ideas and the display is extremely clear. The main issue I had with the unit is that it was under powered. If you are looking at a compact receiver, this one can only handle small speakers. Due to the price you are better off purchasing a mini or micro stereo unit. Also the Marantz iOS app is laidened with design and operational issues. Nice idea but poor execution.
Summary: This unit replaced a similar one by Denon that often disconnected from my home WiFi network. So far it has worked quite well. A few disconnects occurred after setup but the unit soon re-connected automatically. Although this unit is larger than the Denon unit, still it is relatively small for its range of capabilities and power. And sound is much improved. All in all, it looks as though Marantz has taken over Denon and improved the already high quality of Denon products.
Pros: Wide range of capabilities. Relatively small size and nicely designed cabinet. Quite good sound for size and power.
Cons: Somewhat difficult to setup and programming also is not easy. If these were better, I would have given the unit five stars.
Summary: The amplifier itself is very good. Great separation, crisp highs and punchy lows, even when playing from an iPod with a lower kHz encoding, and just fantastic with a CD or vinyl (through the USB). Where it is totally disappointing is in its wifi card. my receiver is no more than 15 feet from my wireless router. It rarely holds a signal and cuts in an out. Sometimes it will not work at all.
Pros: nearly audiophile sound reproduction
Cons: The main advantage of this unit, its ability to access a wireless signal, is a frustrating failure.
Summary: I was looking for a small mini system for my bedroom and after some research I selected the mcr510. The wireless network connectivity, optical in, and AirPlay motivated my decision. When this device arrived, although much smaller than my home theater receiver, it was a little bigger than I was anticipating (about the size of an Xbox). After getting a new shelf for under my television I had the system up and running in just a few minutes.
Pros: Wireless network connectivity, airplay, easy set up
Summary: This is a great product. Took all of 5 minutes to unbox and setup. Simple packaging, easy to set up wifi. Airplay works great. Receiver is about the size of an Xbox -- for some reason the photo implies a much smaller product. Finish is very nice. Good for a grande place.