Fosi Audio 2021: Upgrade Your Home Audio with Bluetooth 5.0 Stereo Amplifier Receiver

Amazon カスタマー: オーディテクニカのレコードとパッシブスピーカーを使用したく購入。
Bluetoothがしっかり刺さってないと反応しづらいことが残念だが、非常に重宝している。
私のようなビギナーはこれでいいと思います。

Japan on Sep 10, 2023

A.May: Ich repariere in meiner Freizeit Kopfhörer und hab nach einer Möglichkeit gesucht, ältere Elektrostaten bzw. Elektretkopfhörer wie Stax SR-40 oder Sennheiser Unipolar 2000 zu testen, ohne jedes Mal einen massiven AV-Receiver hervorzukramen.

Dieses kleine Gerät hier funktioniert dafür einwandfrei und nimmt kaum Platz weg. Die Lautstärke ist mehr als ausreichend.

Germany on Sep 07, 2023

TxKevin: PUshing 2 Dual LU47PB 4" 3-Way Indoor/Outdoor Speakers with this. It connects very easily and is decently loud. No issues with Blue tooth dropping. This is not going to deliver deep rich base or blast a rave but for an outdoor gathering where you want to be able to hold conversations and not enrage the neighbors, its perfect.

United States on Aug 18, 2023

ermintrude: I've bought two of these now (mostly to replace a couple of old LP 2024A+ - newer versons of which don't cut it!).
I'm impressed: with good speakers, this small amp is excellent. It feels robust. The impressive sound has a wide range, more than enough powerfor domestic uses, and detailed sound stage.
Bluetooth works fine with different sources (phone, tablet, tv).
Slightest question mark - if you're going for small, bear in mind that using banana (recommended) , they will stick out a bit at the back...

United Kingdom on Aug 15, 2023

Spencer: I purchased this amplifier in January of 2019. They may have changed a few things about the amp since i Purchased mine, so YMMV. This amp has been my daily driver at my computer desk for 4 years. It has been driving a set of bookshelf speakers at a pretty low volume for its entire life. It has served me very well all things considered. The sound quality that comes from this setup are superb. I have a few pairs of studio grade headphones and IEMs, and with a good speaker to drive, this amp is spectacular.

Recently, the right channel of my amp has developed a ticking noise that does not get louder with the volume, but does go away when the amp is turned all the way down. It does this with no input plugged in to the amp, and with multiple different cables and input devices. I don't know exactly when this issue appeared, but I only noticed it recently. Within the last month or so. It might not be related, but my amp also sparks when you plug it into power. it has done this for quite some time, and probably points to a ground issue somewhere within the amp, which would explain the ticking noise I am experiencing.

I have loved this amplifier for years and have not had any...

United States on Jul 25, 2023

stephen gould: Inexpensive and works and the Bluetooth is a real plus so I can stream music to my TV room tower speakers.
My speakers only need 20watts rms to drive them, so the 50 is more than enough.
East to hook up and the Bluetooth connected without a hitch, plus has good range.
Overall it's pretty good, only gave it a 4star bc it has to be turned up to 2 o'clock to be loud enough for me.
I had a kinter 30 watt rms class d amplifier and never had to turn it past half, even though this unit doesn't have any noticeable clipping at higher volume nor any amplifier noise.
It's a good unit more than worth it's price.

United States on Jul 15, 2023

HappyD: I rec'd 2 days ago, a more detailed review will follow. It's a $50 dollar amp. I am not comparing the sound to 20K mono blocks. These little amps seem to need a break in period! I was looking for a small footprint digital amp with a blue tooth opt. Set up and un-wow but as time passed experience w/digital amps said let it play the sound opened up. I am using it to power a pr of homemade open baffle speakers outdoors. 24 hrs latter the amp sounded ok. It powers the speakers well and provides reasonable sound quality. I will provide a better review as I get to know the amp, but so far I am happy. It seems to shine with acoustic and chamber music. I have not tested it with large scale music yet, we will see. Initial thoughts "Happy" with choice. Build Quality seems decent, but its small, not a lot of space with connectors, I like the tone controls.

United States on Jul 06, 2023

Susana: Llevo ya un año con él y muy contento.

Vino bien empaquetado y protegido en su elegante caja.

Lo he conectado a dos altavoces Sony de 100w de una cadena de los 90 que ya no usaba y al ordenador de sobremesa. También probé con otros JVC de otra cadena.

El sonido es de buena calidad. He conseguido revivir altavoces que ya no usaba y me gustan más que mucho de los altavoces que hay ahora en el mercado para ordenadores.
Los potenciómetros son cómodos y me gusta mucho que se encienda con la patilla en vez de un botón.
El tamaño está muy bien, cabe en la palma de la mano. El cable de conexión de alimentación tiene un transformador que es casi tan grande como el propio aparato. También trae distintos tipos de conexiones/enchufes dependiendo del país en en el que vivas.

Las conexiones traseras son de banana (no incluidas) o bien sujetas el cable introduciéndolo y enroscando la sujeción.

El diseño también es muy bonito. Tuve otro, más barato pero la caja era para atornillar, supongo que era para un coche. Este queda perfecto en mi escritorio.

Lo mejor: el diseño, el sonido
Lo peor: no es lo más barato, no tiene...

Spain on Oct 23, 2022

Mike: J'ai acheté ce petit ampli "pour voir" ce que ca donnait un ampli de classe D. Je l'utilise avec des enceintes assez correctes sans être folles (Ellipson Prestige 4i) qui sont habituellement pilotées par un ampli AKAI vieux de 40 ans (classe AB) et que j'ai un peu bricolé pour l'aider à passer le temps.
Mon ampli AKAI est meilleur, bien entendu. Mais l'équivalent aujourd'hui couterait 10 fois le prix de cet ampli classe D, et la musique n'est pas "10 fois moins bien" très loin de là. C'est un peu plus terne, moins précis, malgré tout les graves sont tout à fait la, les aigus acceptables, et la puissance est là elle aussi, tout va bien, malgré le fait que mes baffles sont 8 ohm (et je pense pas super adaptées à cet ampli). Et donc j'entends les défauts de l'ampli oui, mais avec des baffles "très moyennes" ca doit passer inaperçu, par exemple pour rempalcer un ampli d'une chaine Hifi intégrée morte et dont il reste les baffles, c'est juste parfait (et c'est l'usage que je vais en faire).

Un "bémol/bug" malgré tout : je pense que le pré-ampli est mal géré, c'est ce que me fait dire le bouton du volume. Sur celui que j'ai du moins : si je mets le son...

France on Dec 01, 2021

J. RossJ. Ross: Update 10/30/2021:
I'm going to keep my 5 star rating, but I'm getting a "drum beat" low volume sound out of all of the amps when connected to bluetooth with no volume. Customer service is working with me to resolve this (could be my WiFi AP directly above the units).

Update 10/21/2021:
Having used these four amps for several weeks now, there are a few little nits that have surfaced, but I still think these amps are superb. First, if you stream more than two Bluetooth sessions in to these amps that are collocated like mine, there are audio dropouts. Ultimately, it would be so much better if these could do wi-fi directly and have more flexibility to handle perhaps dozens of streams. Second, for those who want to try the Google Home Mini route, what I've found is that if you add a stream on the Home app that the two stay in sync. Adding a third set of speakers kills everything (bluetooth dropouts, and loss of sync). So, if you intend to have more than two of these in one location and need to play three or more at a time, it might require a Sonos or something similar. I really didn't need that...

Original Post:
I love this product. I had previously had a single...

United States on Oct 14, 2021