BT30A

コンパクトなアンプを探していたところ、この商品にたどり着きました サイズは確認してましたが、届いた商品は本当にコンパクトで、こんなに小さくて、スピーカー４台なるかな〜って思いましたが、全然心配いりませんでした 待合室や廊下のBGM用なので、もともと音質にはこだわらなかったのですが、全然許容範囲の音でした 価格もサイズも最高です 一つ取扱説明書に日本語がないところが残念です

今までは、cdなどで音楽を聴いていましたがタブレット、スマートホンにて音楽を、部屋のスピーカーにて聞いています迫力のある音楽が聴けて楽しんでます。

Good sound

今まで昔の５０wを聞いていましたが迫力の音が聞きたくて１００Wにしましたがボリュームは半分ぐらいですごい音です 低温も高音も今まで使用していた２０年まえの馬鹿でかいアンプと変わらない音質です このコンパクトさですごい驚きです デジタルアンプいいですね

本日届いたが何故か音が出ない。アンプが悪いのか、RCAケーブルが悪いのかわからずに困った。 RCAケーブルを疑うも予備の物も無く、テストもできない。 結局、2時間後、BT/AUXの切り替えに気づき、BTに成っていたものをAUXに切り替えたら音は出ました。 説明書ではAUXにするようにスケッチが有りましたが、まさかBT側になっているとは思いませんでした。 せめて日本語の説明書だったなら、苦労せずに済んだのですが、その点が残念でした。 Bluetoothを使う者ばかりとは限りません、AUX側で使う者もいます、工場出荷時にAUXにしておいてくれ れば良かったのに・・・ 購入するまでBluetoothの必要性を考えませんでしたが、やはり有れば便利です。PCには沢山の曲を保存 していますが、曲によりスキップすることも有ります。スマホ内の曲は好きな曲ばかりです。流れる曲は スキップすること無く聞けます。Bluetoothって便利ですね。 使うまで分かりませんでしたが、BT10AとBT20Aは電源を切るとスマホでBluetoothの再接続が必要だった 様ですが、このBT30Aはその必要は有りません。スイッチを入れた時から音は出ています。 何も分からずこの機種を購入しましたが、本当に幸運でした。とても満足しています。

I really like BT function to connect my player easily.

中華製なので質感は期待していませんでしたが、フロントパネルは金属でできており、スイッチ類の質感も良いです。 音は素人が聞く分には、楽器やボーカルの音がはっきりこ聞こえていると思います。

一言、bluetoothのバージョンは古いけど最高です。

I bought this amplifier to pair with my Sonos Port so I could use a set of Yamaha outdoor speakers, and it's been exactly what I was looking for. Setup was quick, and everything worked perfectly right out of the box. The sound is clean, powerful, and distortion-free, even when turning up the volume outdoors. I also like the compact design, it looks modern and doesn't take up much space in my media cabinet. I've had zero issues with it since installing it. If you're looking for an affordable amplifier to add passive speakers to a Sonos setup, I highly recommend this one.

Suveränt litet paket som levererar tillräckligt bra utan att behöva skämmas.

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.