Last Updated: October 23, 2022 (Refresh Now)
Fosi Audio BT20A Bluetooth 5 0 Stereo Audio 2 Channel Amplifier Receiver Mini Hi Fi Class D Integrated Amp 2 0 CH for Home Speakers 100W x 2 with Bass and Treble Control TPA3116 with Power Supply
Last Updated: October 23, 2022 (Refresh Now)
8.7
SCORE
/10
Total Reviews
971
Old Reviews
197
Unverified
28
Spam Test
!
Yes
BLUETOOTH
600 meters
SIZE
Review Analysis - 746 recent, verified reviews
Detailed Mode
Sound
451volume, sound quality, speakers, bass, loud
+94%
-6%
" ... This little amp champ sounds great and is as loud as you expect a normal receiver/tuner to be. ... It has 2 sub outputs, one for a powered sub and the other for a passive (unpowered) sub. ... Both a great products by fosi audio. ... "
" ... I had serious doubts about it's ability to drive my huge Polk Audio speakers, but it has not problems at all. ... "
" ... The sound is crisper and more distortion free than my fancy component system with tower speakers. ... "
" ... I use the Fosi to power my wired patio speakers. ... "
" ... This amp pushes music through the Quartets as loud I like, but they are pretty efficient speakers. ... "
" ... Adjust the treble and bass and turn it up. ... It drives the Bose effortlessly. ... Sound quality is amazing for such a small amp. ... Stevie Ray Vaughan’s Tin Pan Alley sounds fantastic. ... You just can’t go wrong with this little amplifier. ... "
" ... Good quality sound (it depends what kind of speakers you install) Now I just have to see how long it lasts. ... "
" ... I paired it with Sony book shelf speakers. ... "
Connectivity
340amp, connected, connectivity, connects, bt
+91%
-9%
" ... I got this for a little bluetooth amplifier for a garage stereo. ... "
" ... Came on right away after Bluetooth recognized the connection. ... "
" ... Fast connection to Bluetooth. ... "
" ... My wife wanted though the ability to easily pair up bluetooth from her mobile phone, ipad, or computer to a powered system. ... Did the same for the power brick and have it running into an Alexa voice controlled smart plug. ... "
" ... nice bonus is i now also have bluetooth. ... one thing i really like is the bluetooth addition. ... "
" ... I haven't had any problems with the FOSI amplifier as the Bluetooth always connects exactly as I would expect and I've never had a drop (in my application I only need a 40 foot range). ... "
" ... A good product for a good price for your bluetooth wireless amplifier needs. ... "
" ... Easy to connect to BT, its range is very good. ... "
Usage
135control, easy, setup, speakers, set
+94%
-6%
" ... Now we have an in-ceiling Bluetooth speaker that fills the room with very good sound. ... "
" ... I pull a compact two person camping trailer behind my Harley. ... "
" ... It's running an older set of Bose 2.1 speakers in my work shed. ... "
" ... Needed a small amplifier to power ceiling speakers for ambiance in living room and dining room. ... "
" ... I ran wired speakers when we built our house. ... Flipped it on, easy connect and sounded great! ... "
" ... The connectivity is easy and clear. ... "
" ... I like having the ability to adjust each song to my preference. ... "
" ... Especially since it’s so small and easy to hide. ... "
Body
100size, compact, space, powerful, pool
+94%
-6%
" ... still, it's good for it's size. ... i wish it were closer to a $60 price point but build quality seems good and sound quality overall is great for this little guy. ... "
" ... It really packs a punch for such a small device. ... "
" ... I pull a compact two person camping trailer behind my Harley. ... "
" ... works awesome and is small. ... "
" ... It’s small but works great. ... "
" ... Size / footprint is so much better than older technology. ... "
" ... The 5 way binding posts for the speakers are great and very flexible. ... "
" ... Truly a great little amp that hits well above its weight. ... "
Price
86money, value, amp, worth, cost
+95%
-5%
" ... I might try one of the tube preamp models next, it's neat how much fidelity you can get for so little money. ... "
" ... I rate this amp superior to similar products, and a great value. ... "
" ... For the money, this little buddy does a heck of a job. ... "
" ... The amp produces no where near the claimed wattage and the sound quality is what's expected from that price range. ... "
" ... Do yourself a favor and get it, worth every penny. ... "
" ... You can’t beat the price. ... "
" ... Very pleasantly surprised by the quality of the product/cost. ... "
" ... Was worth every penny! ... "
Size
77size, compact, fit, powerful, sound quality
+100%
" ... Small and very powerful. ... "
" ... Small, I mean really small and powerful. ... "
" ... Small size is nice too. ... "
" ... We needed a small and strong amp that we could hide behind our TV and this fit the bill. ... "
" ... Nice small size. ... "
" ... Size is very small but packs a big punch for the size overall great product! ... "
" ... How then, _HOW_ does something the size and weight of a paperback book crank out such power and keep its cool? ... "
" ... Small and compact. ... "
Reliability
37working, stopped working, failed, two, amplifier
+38%
-62%
" ... No returns unless defective. ... "
" ... I really wanted to get more than two and a half months out of it. ... "
" ... I bought two of these they last about 4-6 months before they both stopped working! ... "
" ... Waited to long to set up, and than worked for 2 weeks and the power supply stopped working. ... "
" ... This is the second one I got, the first quitting after a few years of constant use. ... This one had a bit of trouble out of the box but it seemed to work alright after completely uninstalling and reinstalling the unit in my setup. ... "
" ... This unit (BT20A) lasted 9months! ... It has been one month since my original inquiry . ... "
" ... after a couple month it stopped producing sound to the right speaks. ... "
" ... The product worked for maybe a total of 20 hours then failed. ... "
Marketplace
36return, box, returning, delivered, sent
+56%
-44%
" ... I was surprised the product was shipped in its original box rather than a separate shipping carton. ... "
" ... Only time will tell, but I’m happy with the purchase and would probably buy another one if I had to replace it. ... "
" ... The amp was delivered by Amazon the next day. ... Went and streamed from Amazon. ... "
" ... But this little package came up on my searches and it was exactly what I wanted and more. ... "
" ... This little box is awesome. ... "
" ... After talking with support they sent me a new circuit board to replace the problematic one I have. ... My return period has passed. ... "
" ... Delivered on time and was received as described. ... "
" ... Works as advertised. ... "
Cable
26wire, banana plugs, speaker wire, jack, wires
+73%
-27%
" ... Some comments on screw wire terminals, but I used without issue - just takes patience - it is a very compact design. ... "
" ... The connectors on the back are nice. ... "
" ... My plan is to cable this to an Echo Dot I have. ... "
" ... The amp's speaker outputs accept either bare wire or banana plugs. ... I tested bare wire first, and it worked great. ... "
" ... I needed a way to power them and had thought about running my speaker wire from an additional zone on my Dennon AV-2000XR receiver. ... "
" ... Well I found an outdoor telephone jack and indoor jack and I was able to run audio cable outside through those openings which were right next to where I would put the movie screen. ... And, going back to my resistance to running cable, I only need 30 feet of outdoor cable for both speakers so it was convenience too. ... "
" ... Using the same bookshelf speakers and cables I was able to hook this up fairly easily. ... "
" ... Also, go ahead and get banana plugs. ... "
Network
25connection, signal, ft, walk, house
+92%
-8%
" ... I connect my phone and walk around the house with no issues. ... "
" ... The range on this thing is more than impressive. ... "
" ... The connection is rock solid over a distance of about 20 feet. ... "
" ... I can walk outside over 100 ft away from the unit and no loss of connectivity, very impressed. ... "
" ... I thought the range was good ... "
" ... Wired this up to speakers above my back porch, connects easily, quickly and has good signal strength for Bluetooth streaming. ... "
" ... The range is really very good! ... "
" ... Range is very good. ... "
Marketplace / Returns
16returning, sent, send, returned, replacement
+19%
-81%
" ... Not sure if Fosi would be willing to send me a replacement as I am hoping this is just a bad apple and not extensive of all BT20A amplifiers as I am a fan of the compact size if it works how it should. ... "
" ... Don’t recommend I’ll be returning ... "
" ... Not really worth the 80 bucks I paid, returning it. ... "
" ... Sent it straight back to China. ... "
" ... I'll be returning this Fosi amp asap. ... "
" ... Returned product to Amazon. ... "
" ... I sent it back ... "
" ... NOW I CANNOT RETURN IT! ... "
Cleaning
16power, loud, super, distortion, amp
+100%
" ... For such a small, inexpensive amp it puts out pretty clean power. ... "
" ... Nothing much to say here it does the job super do pact size makes it easier to hide in furniture. ... "
" ... Has enough power to play loud and clean. ... "
" ... On the amp I received the treble control is a little bit scratchy but I solved hat by taking it apart and cleaning the control pot. ... "
" ... Clean lines, matte black finish, pro quality inputs/outputs and smooth knob movement for a precise adjustment. ... "
" ... Sound is clean and uninterrupted no matter what else we have running. ... "
" ... - Big Band full and clean ... "
" ... No distortion, clean lyrics, and a wide frequency range. ... "
Software
15app, music, fosi, android, sound
+93%
-7%
" ... Music selection has been Pandora and Apple Music, mostly the latter. ... "
" ... It's nice, permanently paired to an Amazon Alexa. ... "
" ... Hooked up some drivers sounds amazing. ... "
" ... The sound quality is admittedly better in 100% digital format. ... "
" ... like the size of a small android TV box and takes no space at all and is easy to hide. ... "
" ... So I figured that I'd bring them fully into the future-present by integrating them into my Alexa ecosystem. ... Immediately, the Alexa app showed that my Echo Dot now saw the BT speaker AND the Fosi. ... "
" ... I have this product paired with my Google Home Hub. ... "
" ... Played FLAC files, and the sound was excellent. ... "
Power
15supply, plenty of power, supplies, output, fosi
+87%
-13%
" ... Very power efficient. ... "
" ... The included power supply is larger and heavier than the amp itself! ... "
" ... This does it all with plenty of power. ... "
" ... very good power ... "
" ... My older one simply connected when I turned on the power. ... "
" ... Also it came with a 24V power adapter so it'll make its' full power. ... "
" ... FOSI seems to have better power supplies that are designed for continuous use. ... "
" ... I expect this is due to the DC power supply. ... "
Comfort
14ears, ear, palm, hands, fit
+79%
-21%
" ... Hands down great product. ... "
" ... I don't claim to be Mr. Golden Ears, but this little amp sounds pretty darn good through my Klipsch Quartets. ... "
" ... Requires light, eyesight, steady hands and patience but not a big deal. ... "
" ... It’s about the size of a grown man’s palm, VERY sturdily built in an all metal case. ... "
" ... It'll fit in your hand easily. ... "
" ... BTW, I am not an audiophile by any stretch so others with a better ear may be able to provide critical input in that regard, but for my purposes I’m a happy camper. ... "
" ... It’s a pain to prep but well worth it. ... "
" ... It can fit in the palm of my hand. ... "
Marketplace / Marketplace
11seller, contacted, works, response, advertised
+73%
-27%
" ... Works as advertised. ... "
" ... Seller was awesome and product exceeds my expectations. ... "
" ... Works as advertised. ... "
" ... Pics provides the how-to!! ... "
" ... Works as advertised! ... "
" ... I contacted Carlos at Fosi for help. ... "
" ... Went and streamed from Amazon. ... "
" ... At the price, and with Amazon's liberal returns policy . ... "
Marketplace / Delivery
10delivered, day, surprised, shipping, received
+100%
" ... Delivered on time and was received as described. ... "
" ... This is a tiny box. ... "
" ... Shipping was fast. ... "
" ... This one delivered. ... "
" ... This little box is awesome. ... "
" ... It arrived quickly. ... "
" ... My initial concern upon delivery was that Amazon had slapped the shipping label directly on the retail box with no additional packaging. ... "
" ... But this little package came up on my searches and it was exactly what I wanted and more. ... "
Design
10design, small, print, nice, good
+90%
-10%
" ... the design is simple, elegant and very well made. ... "
" ... Looks great, small foot print. ... "
" ... All in all nice little gadget. ... "
" ... Overall, it's quite pleasing. ... "
" ... What a minimalist treat. ... "
" ... the sleak design lets you take it in and out easily for connection. ... "
" ... If you need an amp, give this a look and see. ... "
" ... If you want something that sounds good, keep looking. ... "
Performance
9job, second, one, lag, fosi
+89%
-11%
" ... Fosi does the job and then some. ... "
" ... It does get pretty warm, but that doesn't seem to affect the performance. ... "
" ... I just say it’s a awesome performance. ... "
" ... All in all I am very satisfied with both the price and performance. ... "
" ... This amp does the job. ... "
" ... Perfect for the job. ... "
" ... Does the job . ... "
" ... And nice looking to boot. ... "
Remote
6control, volume, app, small, power
+83%
-17%
" ... all my controls and remotes stayed the same. ... "
" ... It would have been a perfect amp for me if I could control the volume with a remote because it's hooked up to a television, but I knew what I was getting into. ... "
" ... I’m happy with this purchase but I should’ve gotten the one with a remote. ... "
" ... This way I can control volume easily from the phone (like a remote). ... "
Video
5experience, input
+80%
-20%
" ... I will post a video. ... "
" ... Movie experience enhanced ... "
" ... I love playing music from my phone with the additional input to watch movies through the RCA input. ... "
" ... It's pretty nice to be able to put on a long video playlist on youtube and just go about your business. ... "
Storage
4storage, space, drives, used, quality
+100%
" ... I had in storage. ... "
" ... Drives my "shop" speakers well and takes up very little space. ... "
" ... You need to look close to see the amp, it is tiny, and has freed up space that will be used for CD storage. ... "
" ... Now I can stream my Amazon Music Unlimited playlists from the office Dot to the BT20A which drives the SL-260 speakers directly. ... "
Marketplace / Product As Described
4advertised
+100%
" ... Works as advertised. ... "
" ... Works as advertised. ... "
" ... Pics provides the how-to!! ... "
" ... Works as advertised! ... "
Calling
4call, answer, volume, loud, come
+50%
-50%
" ... I tried calling the support phone number, no answer. ... "
" ... Seems to come from a Chinese boiler room call center. ... Not that they answer the phone. ... "
Battery
4+75%
-25%
" ... I love that I never have to worry about it needing to recharge. ... "
" ... Time will tell if this amp lasts. ... "
" ... I learned about my mistake through e-mail with the person in charge. ... "
Touch
3tone
+67%
-33%
" ... The tone adjustment is a nice touch. ... "
" ... And I’ve had it running on and off all day long and it’s only mildly warm to the touch. ... "
Heating
3hot, get
+67%
-33%
" ... I have had this playing in 90+ degree heat for over 4 hours with no issues. ... "
" ... The internal heat sink is tiny. ... "
Features
3power, dim, use, unit, radio
+33%
-67%
" ... The only faults the unit is that the power supply led light is too small and not obvious that it's on. ... "
" ... Power supply died after 2 weeks of light use ... "
Battery / Charging
3+67%
-33%
" ... I love that I never have to worry about it needing to recharge. ... "
" ... I learned about my mistake through e-mail with the person in charge. ... "
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Specifications
Body
Size: 600 meters
Connectivity
Bluetooth: Yes
Recommendations
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