I've had this for about 6 months now, I've used it every single day. i many use it in 5.1 with the 2016 Sony speaker line, but not the towers. I only have the satellite speakers, and use 4 of them for front A&B and back A&Bm, with an older Sony center speaker (unmarked, cannot find online) but from what I've heard, the matching center speaker is excellent. my subwoofer is the 8 inch Yamaha 2016 model, I paired it with satellite speakers because of room restrictions. its cable of 7 speakers and two subwoofers all at once, and the surround sound truly is awesome AND the easiest to use I've ever seen.
it comes with a microphone that you plug in the front, and run a 30 second program while holding the microphone in your hand (I do it holding it close to my head) and the speakers play a tune that the microphone picks up, and judges the placement of the speakers and the distance from the microphone - automatically calibrating the surround. I've tested this, and put has always been within 6 inches of its measurement; Example - receiver said my rear rights surround speaker was 7' 8" from the microphone(my sitting position), and it was actually 7' 9". its quite accurate, and most of all its simple and fast.
plenty of inputs - 4 hdmi in and 1 hdmi out, all of them 2.2 and capable of 4k HDR and 3D passthrough, with the receiver turned on or off. 2x component inputs and 1 output that is just a simple passthrough - no hd upscaling at all which I prefer(most new tvs do upscaling already). theres also 1 coaxial, and 1 optical input. I have tested all of them, and they all work perfectly every time. theres is a 1/4" headphone out jack not he front, a USB out for maintenance, and the calibration microphone I mentioned earlier.
the sound of course is the most important, and boy does it sound awesome. I have yet to turn it up past 65(I don't know how high it goes) and 65 was only to test how loud it got and it was way, way too loud for any normal situation. it was loud, VERY loud, but there was literally zero noticeable distortion. with the speakers I mentioned and the subwoofer, there was zero detectable distortion even at super high volume. the surround sound setting are awesome, and they do exactly what they are supposed to and do it well. I personally think surround sound has a long way to go, but thats not the receiver thats dolby and company. the receiver receives signals, and interprets them as well as you would expect and it has never malfunctioned in 6 months of daily use(8-12 hours daily). one stereo mode 2.1, it sounds absolutely amazing. bass(very adjustable, to the point I think you can even subtract bass from the source or amplify it 50x). mids are solid, nothing is missing. trebles are crisp and clear, and don't miss a beat. all of it sounds awesome, especially at this price point.
the build quality is outstanding, and solid. of course, its shell is aluminum I think so its not exactly superman strength but it is just a stereo - you place it, set it up and leave it. the case is very solid for what it is though, and the inputs/outputsd are VERY durable. I have for years obsessed over flimsy, cheaply made power cords and the way the cords like to wiggle loose over time(often not much time at all) and sap working. for example, you buy a tablet in 2010 and three months later it won't charge anymore because the power port is loose. that is not the case here, these ports are beastly. I'm careful, but even if I wasn't I think it could withstand quite a bit of mishandling. don't worry about build quality here, Sony outdid themselves in that department.
Remote is okay. there are a ton, and I mean a TON of things this remote can do but the problem is they don't do a great job explaining it. its in the instructions yes, but I think they missed a huge opportunity here. when you calibrate the surround sound, you do it by connecting the receiver to your video source using an hdmi cable. you have to change the channel on your video source to the input you have your receiver connected to, so you can go through the menu and calibrate it. the problem here is this - thats the only thing this menu allows you to do, is calibrate it. they could have added the full, entire receiver menu to this screen and you could scroll through it like a computer, adjusting what you want to adjust without searching for it with the remote on the receivers LCD screen one line at a time. the little LCD screen is pretty small, some of the letters are 1/8" so you have to get up to it to read it. why not keep that there, but ALSO allow you to adjust things on the video source screen on the same menu as calibration? it would have made adjusting its 1000 settings easier. there are tons of sound modes, dolby and dts being the main ones; but its all of the little settings that I wish I could change easier. you can manually adjust the bass, mids, and treble on each speaker as well as increase or decrease its overall volume, or 'distance' from the listener. eq's, hdmi settings etc between all of it, to be able to use a bigger screen to adjust would have made this a 5 star product.
overall, this is an outstanding value. I got it on black Friday 2016 for 199.99, which makes it an absolute steal. for 349.99, Id still say its worth it in fact I was coming to the page to buy it at full price(after hearing it at my dads) when I saw it was almost HALF PRICE. you can believe it was a thoughtless decision, one that makes every single day better with tis awesome performance. oh yeah, it does bluetooth input too.
my setup is this and the speakers mentioned, Samsung ku6300 40", ps4 pro, sennheiser rs 195 on a rs 175 base with rs 185 ear cups (the best combination), and a MacBook Air latest model. these things do literally every thing I need entertainment wise, at home anyway. don't hesitate, this is an excellent receiver.