Fosi Audio BT10A-S Bluetooth 5.0 Stereo Audio Receiver Amplifier 100W TPA3116 2 Channel Mini Hi-Fi Class D Integrated Amp for Home Passive Speakers with Power Supply

Great little amp, big sound! Tone controls work great. Volume/pwr on-off knob is smooth. Pairing is easy. It does run warm to the touch so I cut the outlet power via light switch control when not in use (this is just me being cautious). So far I have about 3-4 hours of constant listening of the unit and zero issues. This is installed in my work shop and it's a great addition. I do follow the power off procedure of... 1) Volume knob counter clockwise to "OFF" 2) light switch to "OFF" position. I have had zero issues with audible power surge "pop" to speakers with this method. Also, I have had zero issues with pairing or unpairing of my "iPhone" to this amp. Very satisfied :)

I wanted this to drive a pair of ceiling speakers that would be connected via bluetooth to my google home mini that was in my kitchen. I have a 7 zone whole house audio system being driving off google home products (speakers, google chromecast audio's, receivers with chromecast built in etc). The amp worked just fine and the BT connection was reliable, but the problem was the BT connection introduced a lag. There's a setting buried in google home to adjust for BT lag, but the lag I got off the amp would change every time I'd change tracks or started a new playlist. I'd get the living room stereo running off a chromecast audio perfectly in sync with this Fosi amp and the google mini in the kitchen using a metronome track on spotify and then as soon as I'd stop and restart the track or play an actual song the two systems would be out of sync and causing an annoying echo. Sometimes they were off so much song lyrics were an entire word ahead. It wouldn't be an issue if you were only playing this one zone, but when it's multiple zones it completely unusable if one is playing out of sync.In the end I just added another chromecast audio to this amp instead of trying to drive it with the google mini since they have a line out and it's been 100% in sync since. I don't blame the amp, which is why I still gave it a 5 star review, because doing more reading this seems like a common issue with any BT speaker connection and trying to sync it with other speakers. I've got the volume set at about 50% on the amp and it drives the ceiling speakers great, and at 1/2 volume on the amp adjusting the volume on the entire whole house system seems to stay mostly in step across the other zones. Too bad google killed the chromecast audio and no one has a similar product with a 3.5mm speaker out port.

I'll start by saying this works fine, acknowledging the range limitation of Bluetooth. I'm using this for permanently mounted outdoor speakers next to my hot tub. I figured that Bluetooth would be fine, using my phone outside with me and this unit inside driving the speakers wired through the wall. After a couple of nights in the hot tub, I realized that I would rather have more versatility than just using my phone - like wifi that I could also control via an app on my phone. The driver for this is to simultaneously control speakers throughout the house and patio, aka whole house audio....

I wanted to save cash while getting modern. I had these 2003-vintage Bose speakers - passive, not powered - that I wanted to leverage. This gadget is working out great.Tested first with the AUX plug from iPhone just to test sound. Very good! Hadn't heard anything from these speakers in over 10 years. Then, tried out the Bluetooth connections. Worked just fine with iPhone 6plus and a very old iPod. As with all Bluetooth devices, I have to fiddle with them when switching to another source...disconnect, forget - all that. But, no problem overall with the Bluetooth.Bare-wired connections OK, but will get some male 'banana plug' connectors for this clean and sturdy little device. Nice metal case, and I truly enjoy the rotary knobs for base, treble, and volume with On/Off switch in front.If I had it to do over - I would get a very similar device from same vendor - one that had the additional output for the woofer. I've still got the woofer; just didn't think I'd use it because it just didn't fit into my plans for the living room. Oh well.

******************Update: My original review is still valid. I put some of those "Banana" plugs on my speaker wire and just plugged them into the amp. That has cleaned up the messy wiring look. The amp is still working like a champ, and I would still buy it again!*******************Bluetooth is very reliable, and the sound when connected to my 15 year old Cerwin Vega bookcase speakers is excellent. The only negative that I can see is that the cabinet is quite small, almost too small. I found it a bit difficult for my gorilla sized fingers to attach the speaker wire to the terminals on the cabinet. Plus, the wires stick out in an unsightly mess.In my mind, that is a secondary issue, but I have attached two photos so you can see for yourself. The price is low, and the sound is first rate. I find it hard to complain.

I moved into a new house which had some BOSE outdoor speakers installed in the patio but no amplifier. After doing a lot of searching I came across this product and couldn't be happier. The sound quality is crisp, the volume is way more than I need or can use without pissing off my neighbors and the device looks good to boot.I've got mine connected to a Google Mini via Bluetooth which is a great setup; the smartspeaker can be where I need it to be, and the amp is in another part of the house (where the wires run to) and it works flawlessly.My only small desire is that the act of turning off the amp at the power socket didn't cause a speaker pop. I understand why it does, but it would be nice if there was a small capacitance or other interim piece of electronics that could "let it down, gently" because I activate it using a smart switch and the act of turning it off this way isn't nice on the speakers.