In this article I talk about a Receiver Yamaha Aventage RX-A870, I've acquired to replace my Receiver Yamaha Aventage RX-A830, which I have already spoken here in Skooter Blog.
The RX-A870 is the evolution of RX-A830. Every year Yamaha renews your line of receivers. The RX-A830 is one of the intermediate models of the line AVENTAGE from 2013, succeeded by RX-A840 in 2014, which in your time was succeeded by RX-A850 in 2015, succeeded by RX-A860 in 2016, and so we come to the RX-A870 in 2017.
The changes from one generation to another are usually not great. The main advantages of RX-A870 about the RX-A830 are the new audio decoders Dolby Atmos and DTS:X and the HDMI inputs and outputs 2.0 and HDCP 2.2, with support for 4 k in 60 Hz and HDR, including Dolby Vision standards, Hybrid Log-Gamma, and BT. 2020.
I was very pleased with the Receiver Yamaha Aventage RX-A830. In terms of sound quality and power he answered me perfectly. But, When it comes to audio and video equipment, Unfortunately a upgrade just forcing the other, or at least encouraging strongly.
In this case, the acquisition of a Playstation 4 For in July and Sony XBR TV-55X905E in December made this role. The HDMI ports of RX-A830 are the version 1.4. They only support 4 k up 30 Hz and not support HDR. The Playstation 4 For works with 4 k in 60 Hz and HDR. Therefore, the RX-A830 becomes a limitation, preventing the Playstation 4 For and to Sony XBR TV-55X905E can be used fully. Actually, I was aware that I would have this problem before you even acquire the Sony XBR TV-55X905E, and I've already started studying my choices and keep an eye on RX-A870.
An alternative would be to connect the Playstation 4 For directly on Sony XBR TV-55X905E and pass the audio from the TV to the receiver via ARC, by HDMI cable that connects. De fate, that's what I did initially. But there is a problem with this configuration. The ARC Protocol does not have enough bandwidth to pass multichannel audio without compression (PCM 7.1) than the Playstation 4 For uses by default. He only has bandwidth to PCM 2.0 (stereo) or multichannel audio with compression, as Dolby Digital and DTS. This is not a limitation of the TV or receiver, but the own ARC Protocol. The eARC Protocol, that is present in the standard HDMI 2.1, will allow the transmission of the new audio formats, but there is still no equipment with this pattern.
Therefore, making the connection in this way, by default the Playstation 4 For send only stereo audio. The most you can do is set it to encode the output in Dolby Digital or DTS, for audio of 5.1 channels, but with losses. Anyway, the Receiver Yamaha Aventage RX-A830 ended up getting underutilized.
My Tv Box Minix Neo U1 It was also somewhat underutilized. For movies it's okay to use 4 k in 24 Hz, taking advantage of high-definition audio also, then I connected directly to the receiver. But for 4 k content in 60 Hz it would have to be connected directly to the TV, losing the high-definition audio.
To work around this problem, Some Blu-ray players 4 k using two HDMI outputs, one being just for audio, to be connected to receiver and send the high-definition formats as PCM 7.1, the Dolby TrueHD and the DTS-HD Master Audio. But that's not the case of the Playstation 4 For, Neither of the Minix Neo U1 and most of the sources.
Searching for solutions, I found a device called AVR Key 18 Gbps, receiving a signal via HDMI and divided into audio and video, in two different HDMI outputs. Is an alternative, but it costs $ 149,00 and more $ 99,00 shipping by UPS. Then it's almost R$ 900,00. Some then import tax, GST and IOF and we're talking about an almost R$ 2.000,00. And it's still a kludge, who needs 2 HDMI cables and works only for a single source. For a second source would need another AVR Key 18 Gbps or a HDMI switch. I spent approximately R$ 1050,00 on the upgrade from the receiver, so it was definitely more advantageous than a AVR Key 18 Gbps.
Another alternative that immediately comes to mind is a splitter HDMI, but just understand how these devices work to realize it wouldn't work. HDMI Splitters typically read the EDID of the two (or but) output devices and sends for an EDID with the best format that all accept, in other words, He would end up sending a 1080 p signal and stereo audio. Other HDMI splitters just copy the EDID of a device. There we have the same problem, If he copy from TV, the receiver I don't even understand the signal, because of the high bandwidth. If he copy the receiver, We will be limited to 1080 p in 60 Hz or 4 k in 24 Hz. Ultimately, sources are not able to send two different signals, and splitters are not able to separate audio and video.
It is worth noting that I already knew the limitations of the RX-A830 When I bought it, and including I mentioned this in the article here on submit your Blog. At the time the RX-A840 had already been released, supporting HDMI 2.0. But I don't want to overpay for a feature that I would not use, are you planning to have a 4 k TV in the near future. That means I made a bad business? Not! Actually, I made a good deal, because despite the RX-A840 support 4 k at 60 Hz, He does not support HDR and not HDCP 2.2. I would need to change receiver either way. It was nice to have saved at the time.
Ultimately, on the one hand I was very pleased with the Sony XBR TV-55X905E and with the images at 4 k and HDR. But on the other I was quite disturbed to be giving up PCM audio 7.1, Dolby TrueHD and DTS-HD Master Audio. It was time to change receiver.
The choice of Receiver Yamaha Aventage RX-A870
Both you receivers has 8 HDMI inputs, being 7 front and 1 rear. I wish there was more, Since I already have 8 connected sources currently, But even the most expensive model of Yamaha, the RX-A3070, U.S. $ 2.000,00 USA, has more than 8 HDMI inputs.
The single point of Receiver Yamaha Aventage RX-A870 What worries me is that just 3 the 8 HDMI inputs 2.0 are HDCP 2.2. The others are only HDCP 1.4. This could mean a limitation in the future. I could have opted for the model RX-A1070 having 7 HDCP inputs 2.2 (only the front is not). But it costs $ 1200,00, while RX-A870 costs $ 900,00. That's a difference of 33%… considerable.
At the moment I have a single source HDCP 2.2, that is Playstation 4 For. I have one Minix NEO U9-H on the way (actually stopped in Curitiba for a long time) We must support HDCP 2.2 in a future firmware (currently does not support). Yet I will keep a HDCP input 2.2 left. Will be missed in the future? I think unlikely, do you plan to buy 4 k Blu-ray player no other video game consoles any time soon. Playstation 5? It is likely. But I'm betting it will be backwards compatible with the 4.
Ultimately, only time will tell if I hit. But I believe to need more HDCP inputs 2.2, I have to change receiver again because of some new technology, as happened with the RX-A830. In the latter case I would still be able to use a Switch HDMi with HDCP support 2.2. They already exist and cost about $ 20,00.
Give way, I ended up deciding by Receiver Yamaha Aventage RX-A870. But I left it only on my wishlist, do you intend to purchase it so soon. The idea was to sell the Receiver Yamaha Aventage RX-A830 to help defray the Receiver Yamaha Aventage RX-A870, but I didn't want to be without receiver. So I decided to wait until I could afford the RX-A870 for complete, because it could take to sell the RX-A830 for a fair price.
Also be contemplated with the RX-A830 and sell my old Onkyo HT-S5400. But as he is a HT-in-a-Box, wouldn't it be cool separates it from its. And sells it with boxes would mean having to buy elo less a couple of boxes for the RX-A830. The game would end too expensive, so I gave up that idea.
The purchase of the Receiver Yamaha Aventage RX-A870
The Receiver Yamaha Aventage RX-A870 costs $ 899,95 in US Amazon. At first I was thinking of buying it there, just like I did with my two receivers prior: the RX-A830 and the RX-V675, both also from Yamaha.
But it is worth remembering that, When I bought the RX-A830, He was already old model, with a good discount. The RX-A870 with the cost of shipping, for redirectors and taxes would be loud, at the risk of over the R$ 5.000,00. On Free market, the RX-A870 was in the range of R$ 4500,00 a R$ 5000,00. I don't like the mania of many sellers advertise there products like sealed and then send scrambled products, full of baby kisses, without invoice, and with the whole package detonated. But it's complicated import directly and end up paying more expensive.
I was accompanying the prices since the beginning of December without much excitement, because I haven't even bought the Sony XBR TV-55X905E. One day appeared an ad with price well below average: R$ 3.888,79, and still in 12 interest-free installments. New vendor, no qualifications. It seemed too good to be true. So I was just following up.
Until the day 26/12/2017, the seller finally completed 10 completed sales and appeared with the qualifying round in dark green, indicating that all of them were posted on time and there were no complaints on the part of buyers. There was still 3 positive comments. Of course these questions were no guarantee of a good deal. Sales could be fraudulent. But there was still the buyer protection program to guarantee. Decided to buy.
I don't like to buy in installments and keep paying interest. I understand dealers pay more for the free market rate in these cases. Many sellers put two ads, and the installments “interest-free” It's actually more expensive for setting interest, to get to the free market. But this seller had no other announcement. Furthermore, in this particular case the installment came in handy, because I couldn't sell the RX-A830, without me shake. The plots of R$ 324,07 pesariam not so much, even though the sale took.
No give 03/01/2018 the Receiver Yamaha Aventage RX-A870 arrived. I tested it for two weeks and then put the RX-A830 for sale. I ended up selling fast, by R 2.900,00, of which I got R$2.836,10. The rest was to cover the “Free Shipping”, that is actually played by the seller.
De leaves para fish, the qualification of the salesperson RX-A870, who is Ty, Paraná, plummeted. Today she is at level orange, with 12,17% with complaints and 30% the purchases were delivered to the post office or to the carrier after the deadline. Apparently I was lucky.
Different models of the same equipment for different countries
Before you speak of unboxing, an important note here. I do not know exactly why, but the Yamaha works with multiple versions of the same model of equipment, each one for a market. In the case of RX-A870 There are at least seven versions:
- U.s. and Canada model;
- Model of China;
- Korea model;
- Australia model;
- United Kingdom model;
- Europe model;
- Russia model;
- General Model.
What is the difference? Before buying I checked the manual to check. One of them is on FM and AM tuner, because the frequency band and bandwidth of each station varies by country. United Kingdom models, Europe, Australia and Russia also rely on digital radio (DAB). The Brazil follows the American standard for AM and FM. Therefore, both the American model and the General work here.
Another difference is in the power supply. The American model is AC 120V 60 Hz. Chinese is AC 220V 50 Hz. The Korean is AC 220V 60 Hz. The Australian is AC 240V 50 Hz. European and the United Kingdom are AC 230V 50 Hz. The AC 220V to 240V Asia and works in 50 or 60 Hz. Finally, the General model has a key to select between AC 110 the 120V or AC 220 the 240V and works with both 50 or 60 Hz.
Even the dimensions there are slight differences between models. But a difference that jumps the eye is in powers. Looking quickly it seemed that the American model is more powerful, delivering 110W per channel while the others deliver 100W. I even took a walk behind when I read it. Would I be doing a downgrade involuntary in the power reveiver?
But looking closely I realized that the 100W of other models are 20 Hz a 20 KHz with 0,06% THD in 8 ohms, While the American model are 110W 1 KHz with 0,9% THD in 8 ohms. In other words, is more power, but with more distortion. Probably the appliances are equal in this regard, mas nos EUA ele é vendido mostrando o valor de mais potência e mais distorção para acompanhar a prática padrão dentre os concorrentes. O consumidor desatento só olha potência e esquece de ver distorção e impedância. O manual também indica a potência de um canal sozinho, que é 130W em 1 KHz with 0,9% THD in 8 ohms, mas para o Reino Unido indicam 160W, porém com 4 ohms. Ultimately, definitivamente é marketing para diferentes países e nada mais. Só faltou botarem PMPO. 🙂
In practice, dada a bagunça que é a energia elétrica no Brasil, com tensões diferentes até mesmo dentro de um mesmo estado, o modelo Geral é o mais indicado, até para facilitar a revenda. I get along with the American models for being in a region where the standard voltage is 127V, but migro pro general model without any loss.
It is worth mentioning that only confirmed that he was with the General model after receiving the package, as the announcement stated only that the appliance was bivolt. So could be either the General model as the Asian.
To my surprise, the Receiver Yamaha Aventage RX-A870 came properly sealed and with invoice, Although I have not been able to verify the veracity of the same, that is a Single Electronic NF. It is true that the origin of the product is the Paraguay, so I expected a product stirred and filled with baby kisses. I was happy that wasn't the case.
Inside the box we have manual, power cord with plug type A (from the U.S.), remote control, microphone. All sealed. The receiver also came packed without any sign that has been tampered with. Perfect with him too.
Right away I noticed the remote control RX-A870 is very similar to the RX-A830, but filed past the TV control buttons. The remote control RX-A830 was the model ZF27030 and RAV505 RX-A870 is the model RAV554 ZW69520.
It's a questionable change. As much as there is HDMI CEC, the TV remote is required to change channels and select entries, In addition to turn it on and turn it off. I confess that I was not using the remote control RX-A830 to this end, for lack of usual even. And a lot of people don't use too lazy to do the configuration procedure, that often involves having to be testing different codes until you find what fits on TV in question. But anyway, I regret the withdrawal of the appeal.
Otherwise, the remote control is pretty functional, allows you to select the entries at the touch of a single button. Ultimately, is a good control and follows the same layout of my other two controls receivers the brand.
Inputs and outputs: What we have, What's changed
The Receiver Yamaha Aventage RX-A870 has 5 analog audio inputs, 2 optical digital inputs, 2 coaxial digital inputs, 1 composite video input, 1 component video input, 8 HDMI inputs, 1 USB port 2.0 (front) and a RJ45 network port, Fast Ethernet (100Base-TX, 10Base-T).
These analog ports won't make me miss. I don't even have a analog sources, except for classic consoles, but they are linked via Framemeister. But, It's sad that Yamaha has filed 5 analog video inputs without putting anything in place. They could at least have put a couple of extra HDMi inputs to compensate.
The analog outputs also did not make me miss, but it is also unfortunate that they have gone without being replaced.
With the Receiver Yamaha Aventage RX-A870 unpacked, It's time to install it and test it. First I spent all speaker cables, HDMI, etc. from the RX-A830 for ele. And then, the RX-A870 held your place in rack.
A change that I quickly realized is that the RX-A870 Try naming the sources automatically. On RX-A830 the doors were just like HDMI 1, HDMI 2, etc. and it was possible to name them manually. The RX-A870 also allows you to name them manually, but by default already puts a name on each one of them according to the source.
For example: for my Blu-ray player, He shows “BD”. For my Playstation 4 For, He shows “Playstation 4”, that probably is being sent by the appliance itself. For the Minix Neo U1 he alternates between “CD” or “BD/DVD”, Depending on the contents in the implementation.
For the Playstation 3, the text is “PS3”. For the Nintendo Switch, the text is “NintendoSwitch”. For my mini PC, the MSI Cubes 2, the text is “9XXXX”, HE knows-because. And Sky decoder, the text is “HMC”.
Then I tried to test the new audio formats. I put a movie with Dolby Atmos to rotating in Minix Neo U, and the receiver showed “(Dolby logo) Atmos / DTHD”.
No Windows 10, Dolby Atmos is paid, installable through a store application. But is it possible to install a trial version of 30 days. With that tested a few demo videos and the decoder has indicated “(Dolby logo) Atmos / DD +”.
It is worth mentioning that the Dolby Atmos works both on the Dolby Digital Plus, How about the Dolby TrueHD. The receiver acknowledges both formats, identifying them and showing the corresponding text in the display.
For content coming from TV, including the Netflix application, the decoder identifies the audio such as Dolby Digital Plus, showing “(Dolby logo) DD +”, being able to offer up to 7.1 channels. Of course there is no HD formats in these cases, due to the limitations of the ARC that I explained.
Returning to the Minix Neo U1 , I tested a few more movies with Dolby Atmos on Dolby TrueHD and DTS-HD Master Audio, for which the receiver shows “DTS-HD MA”.
My room lets you install speakers surround butts. Therefore, the configuration I use is with a pair of front boxes (JBL ES30), a central box (JBL ES25), a couple of boxes surround (JBL ES10), a pair of front top boxes (JBL ES10) and a subwoofer (Infinity Primus PS312). This setting is identified by the RX-A870 as 5.1.2.
The resolutions supported by the RX-A870 with Sony XBR TV-55X905E are 480i/576i, 480p/576 p, 720p, and 1080i, all with choice of 50 or 60 Hz; and 1080 p and 4 k, with options of 24 Hz, 50 Hz, and 60 Hz.
To connect to the network, It also has built-in WiFi, the standards 802.11 b/g/n. I have not used, I prefer to use the wired network, Once it is available on site.
The RX-A870 has detected a new version of firmware, soon when first turned on. I did the update and it is currently at version 1.09. It is worth remembering that the Dolby Vision support was added after the launch, via update.
The RX-A870 can also be configured to simulate the surround additional boxes when the source has fewer channels than the current configuration. In my case, for example, It is common that the source is only stereo or 5.1. In this case the receiver takes care of generating the other channels to reach the 5.1.2. I leave this feature always connected in automatic mode. When the source is PCM or Dolby, He selects the “DSur” . As the font is DTS, He selects the Neural:X.
To make the distance and gain settings of the boxes, I used the YPAO microphone that comes with the appliance. Simply position the microphone in(s) position(s) where will be(will) the(s) listener(s) and run the Setup.
The YPAO is not extremely precise, but in General does a good job. As he has a certain variance, I pretend that I'm going to use all the 8 possible positions, but actually leave the microphone in the same place, right in front of the TV, for the 8 measurements. The result ends up being an average of 8 measurements, and is more reliable.
The YPAO did a good job finding the approximate distances and gain needed for each box. But, He finished identifying all my boxes as “Large” (large). They really are great, but the jargon used, the “large” in fact mean “Full Range”, in other words, the YPAO identified that all my boxes are full range and simply “disabled” my subwoofer.
Although my boxes have a really great bass response, down to 50 Hz, in the case of JBL ES30, It is obvious that the Infinity Primus PS312 does a better job in that range and below it. That's why I have a subwoofer. Give way, I chose to spend my boxes to “Small” and put a cutoff frequency of 60 Hz for the JBL ES30 and 80 Hz for the other. Give way, the sounds below that frequencies go to the subwoofer.
As for languages supported by Receiver Yamaha Aventage RX-A870, are 8 their, but the Portuguese is still not being one of them.
You can configure Stand By After a few hours, What is useful for when the HDMI CEC does not work to turn the receiver for some reason. There is also an economic mode, I have not tested. The manual does not say clearly what the receiver do in this mode, but he know he leaves the weak display and can cause distortion in the audio. Better to leave off.
The RX-A870 It also has Bluetooth. It is the version 2.1 with EDR. Is a feature that ended up not testing, because Minix Neo U1 and can run any application that I would take on the phone to listen to music, sending via HDMI instead of Bluetooth.
A problem with the BD Player
An unexpected problem arose when I was testing my BD Player. For some reason, the audio does not come out at all times. In most cases the receiver was dumb, like I'm not getting audio.
I tried to move in multiple configurations of the receiver and the actual BD Player. But the problem was only solved when I removed the BD Player the HDMI input 1 from the receiver and I put it on HDMI input 4. Apparently the problem of BD Player is with the entries that support HDCP 2.2. Is a unit of Sony, model 2012 and, therefore, before the HDCP standard 2.2. The HDCP standard 2.2 is compatible with the HDCP 1.4, the unit uses, but for some reason there was no understanding.
With the BD Player at the entrance to HDCP 1.4 the troubles are over and did not return more.
Summary of Connections
In short, I'm currently using the HDMI inputs as follows:
- HDMI 1: Playstation 4 For
- HDMI 2: Minix Neo U1
- HDMI 3: Playstation 3
- HDMI 4: Blu-Ray player
- HDMI 5: Switch HDMI
- HDMI 6: MSI Cubes 2
- HDMI 7: Decodificador da Sky
Only the Playstation 4 For need HDCP 2.2, then it must be necessarily in one of the 3 first entries. The Blu-Ray player needs to be in a non-HDCP input 2.2 (inputs 4 a 7), due to the aforementioned problem. Other devices can be in any entry and were placed half randomly.
As I have 8 sources and didn't want to be using the front door to one of them, I chose to use a Switch HDMI to connect the Nintendo Switch and the Framemeister. The strategic choice was because both use only 1080 p (edge of my Switch HDMI), both get along with switch (not every device works well with all HDMI switch), and are never on at the same time. As or Switch HDMI automatically selects the active source, I don't need to be by selecting the entry in the switch.
With respect to the speakers, I'm using the following configuration:
- Front: 2x JBL ES30
- Cental: 1x JBL ES25C
- Surround: 2x JBL ES10
- Rear Surround: absent
- Upper Front: 2x JBL ES10
- Subwoofer: 1x Infinity Primus PS312
I could use a receiver a little stronger with these boxes, but for the volume that I usually hear the RX-A870 gives more than enough. Usually hearing under -28 dB. When I'm alone and I want a loud sound will until the-20dB or-15dB, without any loss of quality. Rarely spend that, because spending that often cause me problems with the neighborhood.
Remember that I don't use speakers surround butts because I don't have space in my living room for that. If I use, I'd have to switch between 7.1 and 5.1.2 channels, as the source, because RX-A870 does not support 7.1.2 channels. Despite having 9 outputs for speakers, He feeds only 7 channels at a time. Only the two more expensive models of the line Avantage (RX-A2070 and RX-A3070) support 9 channels simultaneously.
I am very pleased with the Receiver Yamaha Aventage RX-A870. The cost of the upgrade from the RX-A830 so he ended up being relatively low, considering the values of purchase and sale. There's not much difference between them, except for the support to new patterns of connection (HDMI 2.0 and HDCP 2.2) that allow the RX-A870 pass 4 k video in 60 Hz 4:4:4, as well as 4 k HDR, and the new codecs audio, how Dolby Atmos and DTS:X, that has become standard in new releases. There are other differences, mas nada que eu realmente utilize. Parece pouco, mas era só isso mesmo que eu realmente precisava, because power and sound quality both RX-A830 and RX-A870 equivalent and are of great size to my ears.