BT10A Bluetooth 5.0 Amplifier Stereo Power Amplifier, 2 Channel Class D Mini Hi-Fi Integrated TPA3116 Audio Amp, for Home Speakers 50W x 2, with 19V 4.74A UK Power Supply

I bought this Fosi amp as a gift. A friend of mine recently moved into a new flat and I wanted her to have a quality audio setup. I found a great deal for a pair of Celestion SL6 passive speakers (100w) on eBay - they were high end, audiophile level bookshelf speakers back in 80s, which look cool too. I just needed to find an amp to power them (on a budget). Had to be easy to use, connect to her phone and TV, small, and ‘pretty’ enough for her to consider keeping in her living room - she’s not really into her tech and was nervous when I told her I was getting her speakers. Have to say I was a little nervous too. I’m used to spending large amounts on audio gear, and I had no idea what to expect from this 50w, £50 amp. Would it power the speakers and how would they sound? Well, I shouldn’t have worried. The moment music came through we both had an enormous smile on our faces. She couldn’t believe the difference, and how good audio can sound compared to what she had before. The amp is plenty powerful, max volume is too loud for her flat. The bass is rich and delicious, and the separation is miles better than anything I was expecting. Such a pleasant surprise. Obviously the speakers would sound better still with a high-end amp, but we’re talking marginal gains. With a nice pair of passive speakers this amp offers you an order of magnitude better sound than your typical active speaker set up (sound bar, sonos etc). Excellent value.

Arrived in a fair sized box - then you open it and go 'No way'. It's tiny, maybe as big as 2 Nurofen packets on top of each other. Is this gonna make any sound at all? (I'm used to 19 inch Cambridge amps etc). Well flippin eck, it does. I was gonna use it to power the sound on my tv, a Hisense, into Gale bookshelf speakers, which can sound amazing. All you do is attach the speaker cable, then the tv and the Fosi amp found each other straight away via Bluetooth...and boom. Big sound, happily supplying the speakers with all they needed. And it sounds great! I just set the unit's volume to 12 o'clock and control the level via the tv remote, never touch it. For £60 this thing is startlingly good, and let's be honest cheap as chips.

This review is a 48 hour ownership test for: [New Upgraded] Bluetooth 5.0 Amplifier Stereo Audio Amp Receiver, 2 Channel Mini Hi-Fi Class D Integrated Amp, for Passive Speakers 50W x 2, with 19V 4.74A Power Supply - Fosi Audio BT10A. Purchased 15.09.2021 with voucher applied, total price paid including postage £57.95. I only read one-star reviews and if I can live with the problems, I’m a customer. I assume most five-star reviews are fake especially accompanied with pictures. I only review when I’m super impressed. This review is genuine of course lol. The unit (Brand Fosi) is designed for the likes of me, hoarding a forty-year-old Sony hi-fi and Sony (made in Germany) 8 ohms 40-Watt RMS speakers in a cupboard under the stairs, which back in the day were the bees’ knees, now covered in dust, rust and mould. The Amp fails immediately on turning on, with 1980’s tech relays going crazy and finally dying. The Speakers tested through another amp sound identical to the day I bought them, aged eighteen. So, what to do? Trawled amazon Bluetooth receivers and amps and learnt about LDAC and APTX decoding (near hi-fi quality) with loads of negative feedback on connection problems when moving through the house with their phone. More importantly, complaints about connection pops, clicks, background noise and even arching sparks when inserting the power supply. This upgraded unit is completely silent even when turning on and volume increased. The power supply appears to be of standard laptop fare, with no issues. At loud Party Music volume, the unit and PSU remains almost cool to the touch. On opening the box (presentation standard) the unit is shockingly small, although made of good quality aluminium materials and copper connections. The instructions are printed in colour on quality card and are clear and well put together. Choice of Bare wire or Banana connectors for the speakers. Once set up and connected to phone via Bluetooth the sound produced is astonishing. A negative reviewer for a different but similar product complained that middle range frequencies are lacking. It is my opinion to achieve perfect HD Hi-Fi sound, you would have to spend a thousand pounds, although compressed Bluetooth and MP3 files from Spotify and YouTube cannot replicate sound purity anyway. My NAD and Techniques Hi-FI with Rogers Export Monitors produce a smooth mellow pure sound. In comparison the Fosi unit produces a much punchier aggressive sound, which can be controlled successfully by carefully adjusting the tiny base and treble knobs. We have tested every genre of music on the unit, from classical through to today’s dance music and I reckon it does a superb job all round. The important negative to consider is, that in my experience the Bluetooth will disconnect if you move around the house with your phone (It did on my test). I’ll update this review if it bursts into flames but I’m fairly confident it won’t. The unit and my old speakers are heading off to my daughters new Glasgow flat and after having a shot she’s dead chuffed. Plus, Greta will approve and Curry’s won’t. Good Luck and Enjoy. (Usual £10 thanks Fosi ((lol)).

Like many others, I was skeptical at first—there's no way this tiny unit could deliver good sound or have enough power to drive floor-standing speakers, right? Well, I couldn’t have been more wrong! I bought this to replace an old, bulky multi-channel amp that had finally given up after years of service in my son's setup. We wanted something smaller, more efficient, and after plenty of research (and a bit of bravery), I decided to give this a shot. When it arrived, we set it up, connected everything, and placed it neatly under his monitor. The results? Absolutely incredible. The sound is rich and well-balanced, with deep, punchy bass and crisp, clear highs. Even with floor-standing speakers, this little amp delivers serious power! To top it off, the Bluetooth works flawlessly, making it even more versatile. For the size and price, this is hands down one of the best audio purchases I’ve made. Highly recommended!

This little amplifier is a great starter for those wanting a budget hifi setup, it's not and never will be a audiophile amp but for the price it holds its own. Add a decent pair of passive (un-powered) speakers and you are away, Bluetooth music sounds crisp and clear, the 3.5mm mini jack on the rear let's you connect via a cable. The down side of the amp is it's compactness the connectors for speakers are close together and a bit fiddley and the rear mini audio input jack inconvenient, there's no headphone socket. To summarize great little amp for a small system with good but basic connectabilty with some fiddley connections for speakers and good Bluetooth all making it ideal for a bedroom or office application.

We wanted to power some outdoor speakers (Adastra 4") on to a patio area, so we hitched this amp up to an Apple AirPort to stream music from the house out to an outbuilding where we've placed the Amp. There's no remote, but a simple volume control and easy fittings for the AirPort / other input and speakers, plus built-in Bluetooth so we have the choice of either linking to music playing in the house extended outdoors or just to BT from a mobile device when we're just sat out on the patio. It's very easy to connect the BT and so far it's been very stable from about 4 - 5m away through a wall. There's little functionality to this Amp, just switch it on, play something connected to it or connect by BT and play. Very easy to set-up & use and the sound seems clear and just what we wanted. We've not yet had it turned up to 'party' volume and infrequently ever will, but for reasonable, don't upset the neighbours, levels it's more than adequate and it's no where near its maximum. Overall - we're very happy with our purchase, esp. with the built-in Bluetooth.

I bought this to power some Wharfedale Diamond 9's in our spare room. I am extremely pleased with this little amp. I only set it up yesterday so it's not had a great deal of use, but the sound really is impressive for the price and size of this little amp. I've streamed from my phone, and from an Alexa sitting in the same room. The tone levels around half way were about perfect for the front-ported Diamond 9's close to the rear wall. Clear, low distortion, precise, and capable of decent levels for my purpose.

Good build quality and sound is decent BUT you have to manually connect via Bluetooth EACH time you want to use it which is ridiculous in this day and age. I assumed I was doing something wrong so contacted Fosi support who informed me it doesn’t support auto connect, something they failed to mention in the product description!!