Facmogu F900S Mini Bluetooth 5.0 Digital Amplifier, 2 Channel 80W+80W HiFi Stereo Audio Amp, USB Sound Card Stereo Audio Amp Receiver with AUX/USB/Bluetooth Input (No Power Supply)

I had to send my regular amp off to repairs, that’s a high end Yamaha Aventage. While it’s getting fixed I figured $25 on a simple temporary replacement would be nice. While this little beast is not a high end amp, it’s in my living room driving a pair of hefty BW 683’s and sounding pretty damn good! Crisp, no hiss and very good volume. In fact quite remarkable with the Bluetooth working perfectly.I had to use a 18V DC 2-4A adapter but it’s working well.For the price it would be an ideal way to use a set of cheap second hand speakers and you have a decent sound system right there. Plenty loud, tight bass, crisp, and balanced. FTW!

I'm using this to drive 2 water proof Pyle speakers in a ammo box that's been modified as a battery box (for powering up my ham radio and charging all our USB devices. The F900S fits the bill, it's light weight, compact, has bluetooth connectivity. What a great little item. It connected to my iPhone without any issues, just that simple. My next upgrade will be an amp like this that can handle a passive subwoofer speaker. You just can't beat the value for the price!

I’ve had the older model for a couple of years. I’ve really enjoyed it. Then suddenly it wouldn’t connect via Bluetooth. I’m using an iMac, I figured there was something wrong with the unit. I ordered the newer upgraded version. No power cord or usb came with it, so I plugged in the old power supply. It will not connect to any of my Apple devices that all recognize it as the Foos900S.I wish I knew why it won’t connect, I miss the great sound I’ve gotten used to.

Runs cool. Plays loud. Sounds is clean. I opted to use my own power supply rather than the cheap one that comes with it.Only annoyance is the startup and shutdown tones. They are too loud and too obnoxious. Tone it down. Make the sound pleasant. Don't let it play over a certain soothing decibel. Alexa Fot, for example, has nice sounds to indicate device status.The JBL Bluetooth speaker I had broke and it cost almost $100. I went to the thrift store and picked up some bookshelf speakers. Now I have a super nice small room system.It lacks a battery so is not portable but I rarely took the JBL places.The Alexa Dot is programmed to turn this on and off using voice commands. I just love it. This eliminates the annoying shutdown tone! But I still get the startup and connection tone. Eek.

Great buy for the price, but I have to cut the bass when playing at moderate volume or it will shut down momentarily. My car speakers don't work much below 60 Hz anyway, so I cut those frequencies out using the graphic EQ built into my tablet and that helps a lot. Instructions say this is caused by low source voltage, but in a car it's around 13.8-14 volts and theres not much I can do ahout that. Maybe it would work better with the AC transformer, I don't know, but that's not an option for me.It sounds amazingly good for the money, but I suspect the stereo separation is not very good. Sounds like mono at times.UPDATE 7/23: I have two classic cars and have one of these amplifiers in each of them. They were purchased in 2018 so not the latest version. In any case, I found that I do not experience the momentary shutdowns I mentioned previously since I started playing MP3 from my phone instead of portable MP3 players. The phone gives better Bluetooth range as well. It's really convenient for me, as my phone connects automatically to whichever car I'm driving. I'm building a third car now and will equip it the same way. I've given four stars rather than five only because I think the sound quality is not as good as some of the higher priced units, which is to be expected, of course. For the price, these units work amazingly well, but your results may vary depending on what Bluetooth media player you're using.

Volume control is nice touch. It's driving 2 heavy (14 yr old RCA) bookshelf speakers from the amp, using BT from iphone and Win 10 PC. I love the power input range 9V up to 24V DC. I took an old 16V 75W DC laptop power supply and plugged power in to the amp. Speakers on my desk sound great. My family upstairs thought I was having a party! Loud, soft, no distortion. Case does not get hot. For $23 (w/o power supply) I like it!Update: after working well for 3 days, it just shut down and won't power up again. I was listening to music at mid-volume and it just stopped. The amp was warm and it smelled like something inside is crispy. Power input says 9-24V. I gave it 16. I will be returning for a refund.

Sounds great - when it is alive. I mostly used it in the wired USB mode. First one died and they kindly sent another. Now that one has also stopped working - no Bluetooth, no USB (though when connected to USB the indicator light is on), and no annoying loud voice saying "PC mode!" over...and over... and over.Gonna have to toss this one and find a better quality unit. A shame - it would be a fantastic value if it had longevity.

My first impression is that this thing looks great, has simple controls, and compact. The downside is the signal strength is not so great. I can not get very far from this before it starts disconnecting. Another thing to note is that I can not turn this up to the loudest setting without it shutting down and restarting. Im using a 24v 6A power supply to run this and 2-6x9 speakers. The last thing I wish was different is the lack of mounting points on it. We will see if it will stand the test of time. I will update at a later time if anything changes.