NSA-250 Multi-Room Audio Streamer Amplifier 50W + 50W | Supports Airplay, DLNA, WiFi & Bluetooth | 24bit 192 kHz Hi-Fi Audio Streaming Integrated 2.1 Channel Amp for Home Speakers

The added bonus of having WiFi, Bluetooth, USB audio, RCA and S/PDIF input source in such a relatively inexpensive package, the S/PDIF optical input is perfect for connecting my TV for something better than the built in speakers.According to from the user manual, for the WiFi connection to link the built-in streamer, it will not connect to a 5G WiFi signal, once switched it to the 2.4GHZ connection, it connected without issue, very stable. I think if you have a mesh WiFi network that covers a large home and this amplifier can be worked flawlessly without using the in-wired Ethernet connection.The app gives you access to all of the different net channels this amplifier is capable of connecting to, which includes many of the different streaming services and net radio stations. For the Spotify and iHeartRadio can be direct link to this amp if you already have account, the device can be found via App, but you have to use the AirPlay function for the audio streaming if you want to use the Pandora, SiriusXM or iTune, which is fine for me.For the sound quality, since I'm not a super hi-end audiophile so can't speak to how it compares to other $500~$1000 price units, but it drives my KEF Q-150 passive speakers just right, beautiful clarity and balance sound. And please keep in mind that this little amp support 2 x 50 @ 4 ohms, which is perfect sound volume for the audio playback in my living room. I haven’t try the the additional subwoofer out yet, but I will get one powered subwoofer speaker to connect with later on.So overall, this small and compact amplifier is perfect for my set up, even some higher price WiFi streaming amplifiers out there that probably sound as good, but none that I saw had the versatility, sources, and other features as this one for the money (less than $200 price range)

As expected this item did not work, In theory it is a decent set up for a little cheap streamer, but that’s what it is a cheap streamer with 1 zone , nomatter if your on lan or bluetooth as soon as you touch the volume the sounds cuts in and out and the channels stop working, any legit manufacturer can’t even supply these because of the china chip issue, so who ever is making these it has to be low end parts, your better off getting the cheapest multi zone stereo receiver with airplay for a fewbucks more, also 50 watts per wont make most people happy with driving louder sound quality. So only my opinion take a pass on this unit and find something else

System/software outdated.

I purchased this unit to stream wifi via my bookshelf speakers as well as hook up to my TV. It is a relatively inexpensive solution and sounds fine. The app works, but it is really basic and you can't use the app to control the device. I can stream spotify through spotify connect or airplay. It only uses airplay 1, so you can't do multiroom streaming with other airplay devices. That being said, I can turn on my TV and use the airplay 2 function on it to do multi-room streaming.You need to set up the TV to use PCM mode when using the optical cable, otherwise there is a horrible buzzing noise that comes from the television. Even when properly set up, there is a slight hum from my speakers when using an optical cable as it is hooked up to my TV. You don't really hear it unless you go right up to the speakers.Unless you're some hifi elitist, which if you're considering this product, you probably are not, this product sounds fine. You get what you pay for, so if your expectations are low and you just want something that will run your bookshelf speakers with some extra features not found in many other amps at this price, this is the product for you. This product also doesn't have any equilizer. I own a pair of ELAC 1.0 debut speakers which are only slightly bass forward. But attached to this, they are VERY bass forward. The clarity of the mids and highs are still okay.As the title of this review states, this product is ineligible for returns, so either be 100% sure that you want the product or find something else. (although to find something with all of these features at this price point will be pretty difficulty - purchased at 150+tax)I also am not sure about this, but it seems like the device doesn't have a "sleep mode," so everytime you turn the device on and off it will have to reconnect to wifi. (takes about 10-15 seconds). Not really a big deal except that the speakers will blare "connected to wifi" every time you turn it on. This is really unncessary because the lights will also flash whenever it successfully connects to wifi.