Fosi Audio BT20A Pro 300W x2 TPA3255 Bluetooth 5.0 Home Audio Stereo 2 Channel Amplifier Receiver Mini Hi-Fi Class D Upgraded Integrated Amp for Speakers with Bass Treble Control

Great quality amp for the price. Nice and small to keep a clean setup. Easy plug and play setup and Bluetooth connectivity. Works perfect with my speakers giving good volume.

Having had a few different hifi setups in my time, I am pleasantly surprised by this latest purchase. I'll list some pros and cons and then give a bit more information about this Fosi Audio amplifier. Pros: - Size: I have a Denon amplifier and Mission bookshelf speakers. The Denon amplifier is amazing, but it's large and I haven't had enough space to put the amp and speakers together on a surface. It's probably the main reason I bought this product. It means I can still use my lovely mission speakers, and the speakers and Fosi amp all fit on a surface I have free. - Sound: If you are getting this, having never had a proper amp+speakers hifi setup, it's probably going to blow you away. The sound quality is very impressive for such a small unit. Having the treble and bass controls are a nice touch. Pair this little amp with some decent speakers and you'll be happy. For the price and considering the size, it's wonderful. - Bluetooth: Nowadays, for the sake of convenience, I use Bluetooth for my music often. Music does sound very good simply streamed from my phone through Bluetooth to the Fosi unit. There is an RCA out for any peripherals (such as a turntable or cd player etc). I haven't had any issues using the Bluetooth. -Build: The unit is made of metal. I've read some reviews mentioning the switches felt cheap or loose....maybe I'm lucky, but mine is fine. Great build quality and sturdy controls and ports. Cons: I can't really think of any. My Denon amp is a fair bit better than this unit in terms of sound and power output, but buying a new amp similar to my Denon unit would cost in excess of £300. And there isn't exactly a huge difference between them. This amplifier got my wonderful Mission speakers back into action and since I've had the amplifier, it's made listening to music really exciting again. I'd say it's good enough for bedrooms or small living rooms. If the room you have it in is particularly big, you may need something a little more powerful. Having a remote control would have been a nice addition. Ultimately, im really impressed with this. It's a quality audio product for not much money. Pair it with some quality speakers and you won't be disappointed.

I love this thing, and can't believe how loud it is! So one thing to mention is that you can't get the full 300w of power with the supplied power supply (32v) - they sell a 48v one I think on Amazon if you need that. Yet, the room I am in is 5m by 3.5m, and I don't think I'll ever push the thing past 1/2 way. Most of the time, considerably less than that. So the above does not bother me. It is powering some Cambridge Audio SX-50, and collectively they sound amazing! I briefly had some Edifier active speakers before this (cheaper, but not by that much), but sound comparison wise, there's no contest. So this is a pretty simple device - no remote, and not a lot going on controls wise, but having the two inputs (one physical, and the other bluetooth) is perfect for my needs. And the manual treble and bass are useful at times too. I've not got a sub plugged into this - for my needs, I don't think I need it (the speakers are pretty good without), so can't comment on that, but may add something in the future, so good to have the option. I'm using this for armature music production, and also for listening to music as I work, and its great for both!

This amplifier is supplied with a 160 watt power supply so don't expect the full capability of power output from the chip. However, it produces more power than I'll ever need, I'm assuming approx 80 watt per channel. I'm impressed with the sound and the ability to play around with the preamp chips. The Bluetooth works with surprisingly good sound to my ear.

PROS - Drives my 100W speakers beautifully - A very discrete unit, fits in the palm of your hand - Easy to plug in and conceal if necessary - The case has a really good feel to it - Nice design and smooth corners - Has subwoofer connection to add bass should your speakers/setup require - Bluetooth connectivity excellent even when going downstairs with mobile in pocket (2-floor house) - Being able to disconnect the paired bluetooth device is a brilliant idea - Blue LED showing Bluetooth is paired - Red LED showing power on - Power adaptor has perfectly acceptable size - Midpoint knobs for treble and bass, allowing setting these at zero (brilliant feature) - Bass and treble controls produce excellent results in sound - Red volume knob of larger size - I'm sure there are many technical reasons why this is an excellent unit CONS - I do not have any issues with this product. SUGGESTIONS: - Provide rubber feet to install the unit vertically on its side (however anyone can get their own rubber feet or even velcro straps/adhesive velcro straps therefore CONCLUSION It's hard to think what else could be improved with this product (maybe create 10 or 15 case colours to suit the needs of customers whose audio setups need to sound as good as they look). I'll get rid of my Cambridge Audio amplifier as soon as I can because it's simply no longer necessary to have something of that size to drive my audio needs.

Incredible product, the sound quality is great over Bluetooth and the range is unbelievable. There’s also very little delay in the playback, so watching videos are no issue with the audio syncing nicely. The whole unit is so small which was very important for my space, yet performs well. I’m not an audiophile but I can definitely say the average consumer would be thrilled by the output, and not to mention the value for money over the competition.

I purchased the Fosi Audio BT20A PRO. Just love this mini amp, it's so powerful. Can you use all my favourite speakers with it. I purchased it 16 October 2024, i used it every day. It hasn't missed a beat.Just a brilliant amp. It's smaller, portable, take it with me when i'm buying new speakers. Friends loved to borrow it when they're doing barbecues. In the summer cause, you can place the amp anywhere. Takes up no room just love it. Look forward to buying the max version with a remote control. And all the extra codex. Great product. Great firm. With the Bluetooth, everyone can put their favourite music on.

JUST GET THE BT20A! NOT THE PRO. Save yourself the extra money. Unless you NEED the higher power rating. I have owed both the BT20A and the PRO so here is a detailed breakdown on what the two can offer. Prior to owning this I had the BT20A. I enjoyed the metallic black colour and clean silver detailing. It gave a very premium feeling for the price you paid. However I had experienced a very loud buzzing which I assume was a fault with my device. Upgrading to the BT20A PRO fixed this issue but I feel like this is the only benefit it provided as compared to its former counterpart. The Bluetooth feature is problematic… The BT20A would only connect to devices when specified and allowed the user to fully control over the use of this feature. Now with the BT20A PRO, whenever the amp is turned on it will connect automatically to any paired device with no option to disconnect unless you manually turn off Bluetooth pairing. If a neighbour was to accidentally pair to your BT20A PRO there is no way to unpair the two devices from your control. And you would have no idea that someone else has paired to it either. Atleast with the BT20A all you had to do was turn the device off which would unpair all devices until actively re-paired. Now with the “PRO” you’ve have lost control as it chooses itself when to pair to a device. And it will pair to anything that has established a connection prior. I had tried removing the antenna but it seems that doesn’t stop the connection issue. The build quality is also unimpressive; one of the knobs on the AMP is loose and jiggles (see video)- something I didn’t have to deal with on the BT20A. This is something that wouldn’t bother me had I known less. But once again this seems like a considerable DOWNGRADE in build quality compared to the BT20A. However I do enjoy the locking mechanism that the dials have at 12 O’clock position. Ensuring that you are listening with standard EQs that studios intended for vinyl playing. The size is small, compact, and fits well to my needs on a limited surface. I thought something so small would have problems with shielding. This is not the case. Shielding also wasn’t a problem for the BT20A. The power rating allowed me to upgrade my speakers which is also very nice, but for vinyl listening, I would never use full volume. However the AMP came with a 32V/5A power adapter despite being rated for 48V/5A. Meaning you’ll have to purchase one yourself. The sound quality is amazing across both AMPs so either choice you make you will be satisfied. Overall, I am very happy with this purchase and that it has fixed the issue I was experiencing with my faulty device. However had I not experienced the issue I would have been very satisfied with just the BT20A.

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This is a honest review of FOSI BT20A PRO. After trying a few Inexpensive yet good class D amps, I decided to go for the fosi bt20a pro, as its based on Tpa3255 and has the bluetooth & rca connection options (till 6.months back there were too few BT amps from fosi or aiyima) Here is my review Build : Pretty solid, everything is upto the mark, the aluminium used high grade anodised one, no creaks and squeaks anywhere when you hold the amp. All the three knobs (bass treble and Volume) are sturdy but somehow the one I got had a kinna wobbly volume knob, dunno if it's just me or this is the way it is. The back connectors and sockets are placed pretty close to each other but with some small maneuvering everything can be pushed, tied and fixed. Accessories There comes a bluetooth antenna the standard one & decent enough, which you have to add yourself. POWER SUPPLY : the amp is rated to work from 24v to 48v power supply but is shipped with a Fosi branded 32V 5A one.. It does what is expected of it and the output is sufficient..(at lest fir my use case scenario is more than enough) The wire provided with the power supply adapter is of adequate length, the block and wires all look decent and feel study enough . Checked its voltage and it does produce what is claimed 32.4V to 32.5V. Functionality.. Bluetooth connects in a jiffy and the coverage is good. Kinna tricky sometimes to get the connection changed but by and large it's easy to switch from BT to RCA There is also a socket of 3.5mm pre out at the back which can be used to supply signals to an active subwoofer which is awesome in my view... But I don't think I ll ever need that because the amp giving enough thump already with the pair or my Sony passive speakers. This same socket can be used to connect this amplifier as a preamp to another amplifier if you want.. ONE VERY IMPORTANT THING : The amp comes with replaceable op amp chips, (which require the user to remove the screws and slide out the motherboard and then chnage the op amp chips) the more enthusiastic audiophiles who like to experiment with different sound signatures can change them according to their preference.. FOSI has suggested a number of op amp chips that one can try after purchasing them from market or from online.. (there a few available at Amazon India as well) In my personal view it is sounding pretty good as it is so for majority of users there is absolutely no need to experiment with the op amp chips. Audio quality Please note I use my SONY BOOKSHELF SPEAKERS with this.. The one which came with my Az2d music system they have a kind of plasticky cone hence the bass is pretty tight and I love that. Via Bluetooth it sounded pretty decent (please note I use Spotify with highest streaming audio quality on an iPhone) Through RCA I stream via my Google chromecast audio and the sound is fantastic. Over all its pretty loud, the tone knobs do a good job and the best part is there is a neutral point for both bass and Treble exactly in the center so you get a good reference point.. The low freq response is awesome which is genuinely deep and tight, the high freq are pretty good too but may be a bit more wanting like 10% lesser than the bass response... But that's just me... Over all it has played everything nicely that I have thrown at it... Mids are pretty good ( as you are to manage the mids via your preamp etc, you can further enhance them as well) Be it the jazz, or Bollywood music, or ghazals by Mehdi Hassan and Live Indian Classical renditions in both vocal and instrumental, it played everything nicely (of course you have to adjust the knobs according to the type of music as well as the source quality) Edit : after using for more than a month I can say the sound is pretty neutral and with a wide stage, the high frequencies need a tad extra kick for my liking so I am trying to arrange a preamp now to boost the quality further.. But one thing is for sure, via Google chromecast audio (which technically means that there is a proper DAC before the RCA input (as the GCA has a dedicated DAC in it) this thing just sounds so great.. Please note : type of drivers (speakers) plays another huge role so please use atleast half decent ones with these... All in all I am pretty happy, would have loved a fully functional remote and a knob to manage the mids too (I know that's tricky) Would have loved to have couple of more connectivity options like optical etc but I know I will never use them so doesn't matter, but having them would have been great even if just for academic purposes... In the end I can safely say that its a pretty good small package Would highly recommend it as tpa3255 chip perfoms extremely well and with its implementation on the fosi board it produces very loud audio without much distortion... There is no hissing or clicking when the amp is idle and it doesn't get hot (that much) as well.. Thanks

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It seems that I got a particularly broken unit, in which the Bluetooth module caused an annoying crackling and buzzing sounds. The manufacturer's support team was simply professional and I was positively surprised by the level of understanding and support I received.

I am incredibly impressed with the Fosi Audio BT20A. Setting it up was an absolute breeze, taking only a few minutes from unboxing to playing music. It integrates seamlessly with my turntable setup, delivering clean, crisp, and punchy sound that breathes new life into my vinyl collection. The ability to switch over to Bluetooth streaming is a game-changer. The wireless connection is rock-solid, has great range, and makes it effortless to stream playlists straight from my phone. For its compact size and affordable price, the sound quality and power output are remarkable. It fits perfectly on my shelf without cluttering the space. If you need a reliable, budget-friendly amplifier that handles both classic analog vinyl and modern wireless streaming without any fuss, this is the one to get!