Fosi Audio BT30D

Perfect little amp. Stylist and functional. Ideal for my needs. I have it hooked up to a pair of old Pioneer (100w) speakers, plus a Polk subwoofer. The units MAX Power Output: 50W x 2+100W. The Bluetooth is fine, and the connection was quick. It does from time to time drop out, even when my mp3 player is only 2-3 metres away, but in the main its stable. I have notice though, that using my other MP3 player, which is an iPod touch, then I get no drop out. Its very loud when I want it to be, I control volume via the mp3 player. Good sound for me, but I’m not audio master. It packs a punch for such a small amp, it handles my speakers and sub well. I would definitely recommend this unit to my family, friends and colleagues.

TLDR: I love it! In my home office I have 2x Gale Audio monitor speakers, and I was previously powering them through an old mini hi-fi, using an amazon echo to play music. I wanted something smaller, and with better EQ controls (yes, the mini hi-fi had none) I also wanted the flexibility to add a sub at some point, so this Fosi 2.1 looked perfect. Initial setup with the 2x bookshelf speakers - the sound is already nicer than the old hi-fi - and such a small neat package too. I had to run it around 3/4 volume, as I want the alexa to control the volume, but that's fine. Other reviews have mentioned hiss, but I dont have any. Then I remembered I had an old sub in the attic, so I went and got it, couldnt get it working in active mode, so switched to passive, and I have to say it further improved the sound again. I'm really pleased with this little amp, it is very neat and tidy, and does exactly what I wanted it to do. Thoroughly recommend if your use case is similar

Remarkable sound for the cost (after a few hour use to burn in) I hooked this little thing up to my Monitor Audio Silver 200' floorstanders and using a good source like my Cambridge CXU into the phono's and playing CD's this unit provides a surprisingly wide spacious sound stage and good solid bass rhythms, the bass goes deep as well and sounded like it actually had more low end clout than my £1500 hifi amp, the sound gives good bite and texture to instruments making strings, violins and cello's etc sound very real, I was shocked how good it sounded tbh. Of course all is not perfect (lets not forget its and 85 quid mini amp) and where this little digital amp falls down is on refinement to the music, it's a little course and hard in the treble quality and lacks the fluid creamy sound of a good hifi amp so it's certainly not a substitute for a good hifi amp but as a bedroom setup or for the computer it's excellent. I then connected it to my THX soundworks computer speakers and 8 inch passive sub and again it proves excellent with more power and punch than I will ever need, even with the standard power brick it has lots of usable volume. Bluetooth sounds just OK as you'd expect and the signal is stable BUT the major flaw in this unit is ANYONE ELSE CAN CONNECT AND PLAY MUSIC OVER IT via Bluetooth WITHOUT your permission as it does not have a pair button or ask for a code on your phone, this is really stupid and why I have only given 4 stars.

Great little amp. I paired it with Klipsch R 41m's and it can shake the room when pushed no distortions that I can hear, pretty amazing. It does have some static noise coming out if you crank up the dial with highs but its only audible when you dont play anything; when music is on you cant hear it. I cant say anything about the sub output since I dont have a sub. The bluetooth connection works great. Great value for money no regrets whatsoever.

Nice sturdy little box with dials feels like an amp should should just tiny. Sounds great with connected echo input or phone over bluetooth certainly no worse than entry level '90s predecessor. Comfortably drives more volume than I need to annoy neighbours from a pair of 8 ohm mission bookshelf type speakers. I now have lots of space and removed nagging feeling I was burning £5 notes using the old one even if it takes about 10 years to pay for itself. Negatives, the bluetooth arial dwarfs it and rather ruins the lines could be useful outside. No L/R balance but something I don't use. No way to prioritize line-in over bluetooth and have to tell connected device to disconnect. But for the money cannot complain about minor compromises (£84 deal) so still 5*. Probably would have gone for model down without the sub out but at the deal price this was cheaper at time.

I run a very low noise floor audio interface into this amplifier with QED cables and clean power. The hiss when sitting in front of near field monitors makes it almost unusable and it will be getting removed from my system. I wanted the analogue sub output and for this it is very useful along with its size and bluetooth connections. Ironically it is the amplification part that lets it down. That said it is probably best of a pretty average bunch if you need such a small size.

Typical Fosi product Works well simple to use, small and compact with good Bluetooth connectivity sounds very good for the price.

Pleasantly surprised by how nice this little amp sounds! Bought it to use on my PC for music etc.. Hooked it to a pair of Denon bookshelf speakers and a Pioneer passive sub and the sound is great. A few little tweaks to the sound adjuster knobs on the front and its sounds lovely. One thing to note that using a 3.5mm to RCA from my PC's motherboard, the volume is crazy loud! my PC's volume bar is on 40% and its more than loud enough. The volume knob on the amp isn't even quarter turn.. So just be warned if using with a PC. Otherwise.. a top piece of kit :)

The unit itself feels to be good quality. All of the knobs are nice to use etc. Bluetooth seems to work well in close proximity but haven't tried through walls or anything. Sound quality is okay, and drives my wharfdale bookshelf speakers reasonably well. Good: - Price - Build quality/feel - Does what it says on the tin Not so good: - Sound quality (as you might expect at this price) Good value little package!

I bought this unit for improving my movie/TV show watching experience - just basic video from Netflix and other such platforms. Nothing to complain about for this use case. The unit is small and quiet, has very good volume output (I have it at half volume and then control the sound via my TV with a 3.5mm to RCA adapter, more than enough volume for a living room), configurable bass/treble, and good connections - easy to start with 2 basic speakers and then add a subwoofer later on. This setup is already a much bigger improvement when compared with basic tv speakers. The added Bluetooth connection also makes it easy to listen to some music. It most likely cannot compare with more expensive setups - but for a basic ocasional listener, it's more than sufficient and I'm very satisfied with it.

Excellent mini amp to go with decent passive bookshelf speakers and subwoofer. Will beat a soundbar setup any day. Very smooth & clean sound. Bluetooth connectivity is seamless and pairs quickly.

I connected this small amp to my custom PC for the past 2 years and some change. I have not had any problems with connectivity, sound, and performance period. It's strong enough to power an 8-in 100W Yamaha sub along with 2, 5-in speakers. The sound is amazing. I can't speak for all, but for me this unit has been a workhorse. When it comes to Bluetooth connectivity, that's subjective and also it has to do with your personal device. It sports Bluetooth 5.0 so in theory it should handle connectivity pretty well. But if your phone doesn't match that version of Bluetooth, you won't get the performance you expect. That's how Bluetooth works. It'll revert back to whatever version your mobile device has. The range is 50 feet, but that's assuming no thick walls, moving from one room to another and going to other floors within your household. It's a radio signal after all. Anyone complaining about losing connection needs to understand how the tech works. For me, it works and I typically leave my phone is one place. I'm actually going to pair it with a Fosi DAC K5, since I heard good things about it. I need to enjoy good quality audio in my headsets too and not try to annoy my neighbors.

It's a surprisingly powerful amplifier in a small form factor, has good build quality and finish. Bluetooth reception and connectivity is great and problem free. To get the best out of this amp you will need great speakers and a sub. The amp can only do so much.