The RX-A4A is very easy to use via either the remote control or the MusicCast iOS app. The front panel of the unit has only two dials (volume and input selector) and four buttons for selecting pre-programmed inputs. Plus front panel connectors for USB and a headphone. Missing is a front panel connector for HDMI which is unfortunate because there are still times I want to connect a laptop to the receiver using my traveling HDMI cable. Now I have to dedicate an HDMI cable connected to a back panel HDMI connection. My previous AV receiver was the RX-V2095 purchased in 2007. That has pretty good audio but the RX-A4A noticeably improves upon that unit especially on the predefined audio and video settings for concert halls and Sci-Fi movie content. Most interesting is the Artificial Intelligence surround sound choice. It does a decent job of determining the best distribution of voice and instrumentation to the speakers based on the source. But I do find I don't like the AI distribution on older audio content that originated from the early days of stereo. Too much of the voice is pushed to the center speaker on that old content which indicates the AI is working as programmed but I'm more used to the 60's and 70's music being evenly distributed between two front speakers. So the best choice, as it was with the RX-2095 was to evenly instruments and voice to all speakers. In my case 7 channel stereo. Otherwise I am pleased with how the AI Surround works. Video management is much easier than the RX-2095 and there is no degradation of video quality that I'm seeing but I'm also not doing any detailed analysis on that. So overall I am very pleased with the RX-A4A. Easy to use and outstanding audio.

I cannot think of anything I dislike yet. I have a 1-off configuration as I have rear speakers but they are 3-times further than a normal 7.1 setup. This lets me set the speaker distance for a REALLY great sound. I also have other oddities where changing the output dB on one side makes all the difference. I am still trying to sort out how to connect and control multiple media players to the HDMI Arc. Right now is keeps reverting to my Blu-Ray

Right before the advent of HDMI into the zeitgeist of AV I upgraded my entire home theater. I got a multichannel DVD player that would also play SACD and DVD-Audio and a Pioneer Elite receiver that could use its mini-1394 interface. That mini-1394 interface kept me from upgrading for years. I just loved the sound of multichannel SACDs. Then Oppo came out with a multichannel universal player was a little out of reach. Then when I was about to pull the trigger on an Oppo they stopped making their AV components. Well a few years passed and things have changed a little. I still wish I could have gotten my hands on that Oppo unit. Then I bought this Yamaha receiver. One of the main reasons I purchased this unit was the ESS Sabre ES9007S DAC it had. I also had prior positive experiences with Yamaha receivers which helped too. But I first learned of the ESS Sabre DACs when drooling over Oppo components. This as a significant part of the Yamaha component has been amazing. It can play lossless files from my NAS, which has been glorious. And it even does a great job decoding my SACDs fed by my new Sony Universal player. I have also been blown away by how awesome the unit has made films. I viewed The Green Knight, and Dune in the past week and it was incredible. Does a great job processing the Atmos soundtracks into an encompassing experience. I really wished I had made this switch sooner, but it always seemed that my requirements for price and features just wasn't there. But now I couldn't be happier with my home theater's sound.

I picked this up for a really good price. I've been needing to upgrade for a long time. My RX-V3800 has long been due to be replaced (although, it makes a great second amp.) I'm not going into much detail as you will find in the other reviews and I will likely amend my review once I have more experience with unit. Setup was pretty straight forward. The unit out the box was doing some strange things with the eArc (and still kinda is, more on that in a bit,) but most of the issues were resovled after a firmware update. I know others have mentioned weird/anamolous issues with the communication of different manufacturers equipment via the HDMI and eArc. I have experienced this, too. My audio does not always sync with what is being played. Sometimes there's a 5-10 second delay from start of video to the time audio starts. Other times, there's just nothing. It's highly variable and some streaming apps perform differently. What I'm trying to determine is if it my TV/AVR interface (or maybe the streaming apps on the TV) or the A4A itself. I never had this audio delay with the RX-V3800 (granted not an eArc device.) Quickly using the Google-Machine, I found that my issues don't seem to be unique, but my home theater setup is definitely unique to me. I have not reached out to Yamaha yet, well, because I want to eliminate my known variables before pleading for help. I've tried all the obvious culprits with inconsistent results. It almost seems like there might be more than one interaction contributing to the audio issues. I don't want to make a full judgement on the this unit yet since I'm not certain there's not some strange interaciton between equipment and/or apps. So, I'm giving this unit a 5 star to start. It performs really well when the audio is pushed out correctly. MusicCast also works well. It's just the quirky thing with timing. I'll amend this review with my findings at a later date. EDIT: I was able to solve my issue. Since my initial review, Yamaha pushed out another firmware update. The update didn't solve the issue, but I noticed that the delay became more consistent and repeatable. After perusing recent reddit posts I started looking at my TV audio settings more closely. I changed my digital output format on the eArc from Auto to passthrough. My audio went crazy, but thought I'd restart the entire system to see what Id get. Whaaaalaaaa! After reboot the system worked perfect. I hope this helps someone and saves them some (painful) time. It tuned out not to be an exclusive issue with the A4A. However, there has to be some standard that makes the devices play well together. Whatever that is, someone didn't follow it.

Produto bem construido, fácil de manuseio; Reprodução do som bem honesta!(possui a potência aproximada de 450W).