Fosi Audio M01-BT Bluetooth 5.0 300 Watt Subwoofer Amplifier Home Theater Full-Frequency Mini Stereo Audio Hi-Fi Mono Power Amp with Bass Gain Control for Passive Subwoofer Speaker Bass Shaker

Build quality and sound this produces is great. I’ve gone through a few plate amps (Dayton) trying to power my 15” Paradigm Servo home subwoofer and this thing pushes it very well. I don’t know how they packed all this power in such a small form but it’s great.

Worked perfect. I have an older 5.1 surround system. The build in am on my 12" sub burned out. This was my best option if i didn't want to buy a new sub. It integrated perfectly with the main receiver. Once i hooked it up, i used the knobs to set everything where I needed I was able to use the receiver to control the volume which was a concern when I bought it. So you don't have to control the volume separately for the sub. It has plenty of power to push the 12" sub. I'm surprised how well this pushes my sub. Plenty of sound. The size is perfect. I'm amazed a unit this small can pack so much punch, and because of the small food print I didn't need to move anything around to make it fit.

FINALLY - An old school "RMS" power rating. 220w (RMS) at 4-ohms. Here is the kicker, it'll handle 2-Ohm loads with ease and likely over 300w at that impedance (if you run a 32v power brick). That is what I am doing and this amp will deliver. Running the two bottom Yamaha 18" cabs with this subwoofer amp. The main Bluetooth amplifier is a Fosi Audio BT-30D PRO (2.1 amplifier). I run the two top Yamaha cabs with that one. This combo is incredible and pumps out high levels of sound. In order to "really" uncork these digital chip amps -- feed them 32v. I am using two 32v AC/DC adapters on both of the amps with additional cooling (laptop computer cooling tray). This subwoofer amplifier def pushes out the power with a 32v power brick - more than I thought. I am running it with a 4-ohm load on those two Yamaha 18" subs. The amplifier never once has given up or gone into shut down mode. The "GAIN" control is kinda odd and has three click positions. It adds audible line noise, but gives this amplifier more pre-amp gain if needed (for really low SPL subwoofers to match sound levels of the main speakers) UPDATE (Jan, 2025) - Solid buy...this little amplifier is a true subwoofer amplifier with power that will surprise you. Granted, if you're into car audio and 3,000w amplifiers, this is not your thing. For everyone else, this little amp will def please. It sips power -- seriously great to just leave it on (no noise). I got another one! I like these -- can't wait for a 600w version

I have a Klipsch r-12SW that the amp just died on. Of course it is just out of warranty, so I ordered this hoping to at least get it working until I could upgrade. Little did I know that I had just upgraded. Now, to be fair, I don't know if the improvement I notice is because the included amp was slowly going bad and sound quality was going with it, or if this amp is just better. I tend to think it is the later, since the bass is noticeably tighter and less boomy than the it has ever been with this driver. I think this amp just provides a better, cleaner signal! Excellent product. Highly recommended!

I purchased this Nov 24,2024 I knew very little about compact amplifiers but I didn't want to get a big PA amplifier for my home theater in my den.The size is very compact,substantial amounts of power,I have it connected to a single 12" Memphis dvc 4 ohm subwoofer along with three other subs,1-(15") sub & 2(12") subs I have inside the den,my den is a fairly large room to accommodate this setup.I just had to balance out all of them to get an overall level of sound.I have the gain at about 10:00 on the Fosi amp,the gain knob is very strong so be careful.I just wish it came with a subsonic filter or a limiter.Your sub will move quite well. Overall the best choice I could ever make & saved me plenty of money from buying another P.A. amplifier. I'm feeling another type of sound I never thought possible.Update: I changed out the Memphis 12 subwoofer & box and switched to a NVX 12 dvc 4 sub & a Harmony Audio enclosure.I wired the NVX 12 sub to a two ohm impedance and it's not a problem for the Fosi Audio amplifier.The lower frequencies that the two ohm impedance presents is awesome in a home theater surround sound system environment.Movies,Music and Games take on a whole new life.The amplifier has been working out very well and stays cool.Great compact amplifier.Everyone should be at a lower impedance for subwoofers,treat yourself don't cheat yourself.

This amp rocks! If you want a powerful amp with lots of raw power, especially if pairing with a bass shaker look no further, this is for you! I'm using it to power a Dayton Audio 300EX (300 watt rms bass shaker transducer) mounted to my Gibralter drum throne. Delivers exactly the right amount of RMS watts to drive the extreme bass shaker, and the controls work as they should: FREQUENCY dial - set to around 9 o'clock approximately 80-100 mHz, there are no actual markings on dial positioning, so it would be nice to have vs having to estimate frequency cutoff. GAIN dial - can select between 3 settings/clicks, Low, Medium and High, again no markings, just 3 clicks to select from. VOLUME dial - again, markings, assuming 0-100% as you crank it up. Be cautious and increase or decrease. Volume and Gain settings, I personally noticed a big difference when it's cranked up to around 75-80% with the Gain set to 2nd or 3rd click - medium to high.

I am using one of these units to power a kicker comp r dual 12" subwoofer enclosure and was blown away at how much power this little box can create. I had to turn the volume to halfway and the frequency to about 1/3 from full. I am once again sending a signal to it from a yamaha receiver. This setup is in my home gym. This would be perfect for some of you wanting to add a sub to your home theater as the car audio setups can be had for cheap on facebook marketplace or even on Amazon for that matter. *UPDATE* This is the finalized setup I am using. I purchased a Fosi Audio P1 Tube Preamplifier Mini Hi-Fi Stereo Preamp 6K4 Valve Vacuum Pre-amp with Treble Bass Tone Control for Home Theater HiFi System(not for Turntable). I was able to reset the subwoofer 2 output to 0 and I am using the preamplifier to adjust the feedback volume on the MQB-1 bass shakers. You can see the settings I am using in the pictures of the preamp and the subwoofer amp. This provides plenty of clean feedback at all volume levels. The preamp gets warm but the subwoofer amp stays pretty cool to the touch unless you are listening at a high volume level playing EDM sets for 2+ hours then it will get warm to the touch. I will update this post with any other mods I make but for now I think this is the best way to run a set of these bass shakers. I am considering upgrading to the larger Q10B bass shakers in the future.... I was very very hesitant to purchase this unit since trying to use the Fosi audio TB10D to power two MQB-1 Earthquake bass shakers resulted in a total failure of the unit.... I decided to give it a shot since fosi audios website recommends this instead of the TB10D to power bass shakers. I was pleasantly surprised when I turned it on and had everything on the subwoofer 2 output rca signal line zeroed out and I was getting some feedback from the bass shakers with a 30hz test tone. I turned the subwoofer 2 output up to +10 and turned the volume of the fosi unit down to about 1/3rd and I was still getting amazing feedback. I am running the MQB-1 bass shakers in parallel using a banana plug 2 into 1 splitter which results in a 4 ohm load. I am still in disbelief at how much power this little box produces to power 2 500 watt bass shakers. I had a behringer A800 on order in case this setup did not work and I have canceled that order since I will not be needing it anymore. The only thing I may add is a clearpro box to get the rca line signal zeroed out from the Yamaha receiver. Other than that this setup is working perfect so far.... I tested it at a fairly loud volume playing Rufus Du Sol Live from Joshua Trees 45 minute set and the fosi amp was warm to the touch. The next test is the 2 hour Camelphat 2023 live set from Creamfields (which is what ultimately blew the Fosi TB10D amp). I will report back if anything fails or goes wrong on my end but for now I think this setup will work and yes I am using the power supply that comes with the Fosi amp. If you are looking to power a set of bass shakers and have no issues adding a line driver if your rca signal level is low then I strongly suggest getting one of these units. I will update this review if anything goes wrong with it... In my photos I have included all of my settings I am using. I am using the rca output from subwoofer 2 on the yamaha receiver....

Was ok while it worked , was gonna order another one to see if maybe mine was just a defect but the price went up over night. So zero stars for that. Avoid this at all cost . Or you’ll be stuck with an expensive paper weight .

This unit was much better than the defect electronics unit. Just opened the box, cut the speaker wire and conecteed to this unit and then to the Marantz amplifier

bien emballé, marche bien avec mon sub Velodyne qui a grillé. Il est reparti pour 5 ans au moins. Tres simple a brancher . Ne pas mettre sur la sortie SUB mais bien sur une des 2 bornes rouge ou noir. pas de bruit, pas de chauffe ! parfait pour le prix. Livraison rapide

Sehr guter Verstärker. Betreibt einen alten großen Teufel sub der im Keller gefunden wurde. Hat ordentlich Leistung

el poderoso Fosi Audio M01-BT Amplificador de subwoofer Bluetooth 5.0 de 300 vatios Cine en casa, lo recibí en un par de días en muy buenas condiciones de empaquetado, sin daños, completo. lo conecto a la salida de subwoofer de un receiver Pioneer con cable de subwoofer de amazon basics, agregandole una "Y" de terminales RCA para que conecte las dos entradas RCA del FOSI amplificador. Utilizo el adaptador de corriente original que viene con el amplificador, en mi caso, después de pruebas de sonido y diversas fuentes y material grabado, no creo conveniente para mi consumo comprar otro adaptador para lograr el rendimiento pleno de este FOSI amplificador, es decir, me quedo con el voltaje y amperaje original ( 24 V A 4.5 AMP) que es el adaptador de corriente que viene con el aparato. He realizado dos semanas de pruebas con diferentes fuentes , varias horas, música, películas, y no existe hasta el momento ninguna alteración del desempeño del amplificador. He utilizado un termómetro láser y durante las sesiones de varias horas aumentó la temperatura del chasis de metal del FOSI 3 a 4 grados, o sea, se mantuvo fresco aun utilizándolo con todo el volúmen y las perillas de ganancia y sub frecuencia.Queda aclarar que el poder de despliegue de este aparato depende de los niveles de grabación de las fuentes originales. Lo he conectado a un shaker Dayton Audio BST-300EX, 300 vatios RMS, y la verdad excede mis necesidades como entusiasta de agregar sub frecuencias plenas y poderosas a mi música y películas. Queda agregar que estoy utilizando un amplificador pioner vsx 1130 7.2, un subwoofer yamaha de 250 watts. Queda aclarar que utilicé inicialmente su capacidad de tener incorporado un receptor bluetooth que funciona como se esperaba, para esto se tiene que enroscar la antena que viene dentro de los articulos de la caja original del FOSI . De igual forma , lo conecte a una bocina Polk para experimentar su capacidad de amplificador mono de frecuencia completa utilizando la conmutación PBTL que tiene el amplificador , disfrutando magnífico poder de este amplificador FOSI. Como conclusión por el momento, este mini amplificador de SUBWOOFER de clase "D", es un gran auxiliar para mis necesidades de sumar mas frecuencias SUB LOW poderosas que hacen temblar, vibrar, estremecer el entorno inmediato. Siendo igualmente un auxiliar interesante y prometedor para el entusiasta de los videojuegos al agregar mas realismo a sus sesiones. NOTA. COMPRÉ, POR MEDIO DE AMAZON, OTRA UNIDAD Fosi Audio M01-BT Amplificador de subwoofer Bluetooth 5.0 de 300 vatios EN enero de 2025. FUNCIONANDO HASTA EL MOMENTO PERFECTAMENTE Y MOVIENDO OTRO shaker Dayton Audio BST-300EX, 300 vatios CON RESULTADOS EXCELENTES.

Ampli piccolo e funzionale. Il filtro passa basso consente di pilotare direttamente un sub woofer passivo. Io piloto un 30cm senza problemi. Comodo il gain regolabile in ingresso per allineare i volumi con il sistema PRINCIPALE. se usato per riprodurre tutta la gamma mi è parso leggermente chiuso sugli alti (ma ho usato delle vecchie casse a 2 vie per tastarlo, quindi potrebbe dipendere anche da queste). Non scalda neanche se usato Per 1 ora a volume quasi massimo.