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Fosi Audio was founded with a simple goal: Build products that sound great and make people want to listen to music every day. We design, manufacture, and sell many Hi-Fi audio products on the market. We pursue your perfect music journey. Enjoy Hi-Fi music with Fosi Audio audio products!
Mini Compact Subwoofer Amplifier
Product Parameters:
- Power Adapter:24V/4.5A
- DC Input Range: 12V-24V
- Terminating Impedance: 2 Ohm - 8 Ohm
- MAX Power Output: 220Watt
- Input Mode: RCA
- Bass Frequency Range: 20-200Hz
- Input Sensitivity: ≤ 280mV
- SNR ≥ 98dB
- THD ≤0.04%
- 2 Channel Power Amp: BT10A, BT20A, TB10A, TB10D, V1.0B, V1.0G, TDA7498E, ZK-1002, ZK-502T.
- 2.1 Channel Power Amp: BT30D, BT30D Pro, BL20A, BL20C, ZK-TB21.
- DAC: Q4, K5 Pro, DS1, DS2. DAC Amplifier: PH04, DA2120A, DA2120C.
- Subwoofer Amp: TP-02, M01-BT, M02, M03, M04.
- Phono Preamp: BOX X1, BOX X2, BOX X3, BOX X4. Tube Preamp: P1.
- Tube Headphone Amplifier: T20, T20X, P2.
- Class AB Amplifier: T3.
Adopt TDA7498E Chip
High efficient power output up to 200Watt, great subwoofer amplifier to drive any passive and active subwoofers.
Compact Design
Measures less than 6 inches wide and 4 inches deeps so it can fit just about anywhere.
Deep Bass
Built-in low-pass filter of 20-200Hz subwoofer, with SUB frequency control, clear and powerful low frequency.
bluelight
Reviewed in the United States on February 8, 2025
I tried quite a few amps and this one is the best value and most power. I would not recommend full-range/sub switchable amps - those do neither good. Great match with Dayton Audio MKSX4 sub. I keep it at 10 o'clock position, connected to L channel from the sub out on AIYIMA A70 Balanced Stereo Amplifier.
Wheatbran
Reviewed in the United States on February 16, 2025
Such a good little sub amp. worked so well with my edifier speakers that I had to stop using it when I moved, as to not piss off the neighbors.
RTBIO
Reviewed in the United States on February 10, 2025
I'm currently using the Fosi to power a compact DIY sub employing 2 Dayton Epique E-150's & 2 10" PR's. Bass management is handled by an Emotiva PT-2, so the Fosi runs full freq. In my basement home theater this is the punchiest and most musical bass set-up I've ever run. It works great for any input; TV, movies, vinyl, FLAC & ALAC, streaming, CDs...you name it. This unit has power to spare in this arrangement. Since I have the compact Fosi mounted to the bottom of the sub, I just give the volume knob a little twist if I ever want to rattle walls. Most of the time it's perfect right where I've dialed it in. The ideal solution for me.
CHP
Reviewed in the United States on January 28, 2025
My use case for this amplifier involves an in-wall mounted ten-inch non-powered subwoofer and a transceiver with RCA left and right passive subwoofer outputs. The location of the sound system is the great room/living room. Open floor plan, two story ceiling height with tile floors. While I have seen some reviewers claim this amplifier does not have the capability to power a large room, I did not find that to be the case at all. After connecting the Fosi amp to my transceiver, I was able to literally dial in the necessary frequency and volume I needed to compliment the other speakers in my sound system (all in-wall mounted surround speakers). The Fosi amp's frequency dial and volume dial allowed fine tuning of both until I had exactly what I wanted in the form of rich and ample bass that more than fills the space. Once I set it up and tuned it in, I have not had to worry with it again. This is a great product for those who have the need for a separate amplifier for your passive subwoofer. I highly recommend it.
7Slot
Reviewed in the United States on January 12, 2025
Used to repower a Mirage MM-6 with a dead plate amplifier.The original amplifier was probably repairable, but everything was covered in glue and there are integrated circuits in the design that could also hinder repair attempts.I gutted the internals and added speaker wire terminals to the old back plate.The Fosi does a great job powering the mini sub and having the controls up on the desk is much better than having to crawl underneath the computer desk to adjust things. this makes it more likely to actually use the sub instead of leaving it off. It helped seamlessly expand the range of some vintage realistic minimus 7W speakers on the computer desk.
m j beadell
Reviewed in the United Kingdom on August 15, 2024
Have 25 year old miller kriesal sub bought 10 years ago second hand. Had probs with the volume knob. Had had enough and bought one of these omg I’ve got a new sub fast tight and hard bass on music and films my old unit was never working at its best it seems now I believe it is fantastic
rider33
Reviewed in the United States on July 29, 2024
If you have a plate amp on a subwoofer that has gone bad, before you spend hours and $$ on trying to bring it back to life, give this little guy a try. In a package smaller than a box of kitchen matches is a little D class amp that likely puts out an honest 80-100 watts which is more than enough for most subwoofers. If that doesn’t light your fire, buy the bigger power supply brick. It also has a variable 20-220Hz filter so it’s only giving your speakers what they need. And, to all the ‘tonality’ comments, it’s a subwoofer amp operating below 200Hz, likely 100100Hz or less depending on your settings. At that frequency sound is apt to be non-directional and signature more a function of the sub you are using than the amp. This is the perfect application for D class, hyper-efficient and less analytical. This thing saved me hours of rebuild time and likely a bunch of money too, who knew?
Tom P.
Reviewed in the United States on December 8, 2024
I have a 1987 Velodyne 12" sub woofer that I used in my garage for music listening primarily. The sub amp died and because the enclosure of the sub is veneer and attractive, I wanted to resurrect it. This little amp worked great when connected to the sub out on my receiver. Not audiophile caliber but not bad for the price.
Albedo
Reviewed in Spain on December 31, 2024
Tenia una salida de un integrado (pre out 2 rca) conectada a un subwoofer, y al activarse éste sonaba un "plop" bastante estruendoso, como este aparatito desapareció el "plop".
Emeterio Jr Salvo
Reviewed in Australia on December 2, 2024
Small but powerful. Good sound and quality
Alexander Seesko
Reviewed in Germany on November 4, 2024
Ich habe mit diesem Verstärker als zusätzlichen Verstärker für meine Dolby Digital Anlage zugelegt. Hiermit war es mir möglich einen passiven basslautsprecher über den Digitalverstärker anzusteuern, indem ich mit dem cinch Ausgang auf den zusätzlichen Verstärker ging. Durch die Trennung der Frequenz und die Lautstärke Regelung, ließ sich das System gut an die vorhandene Anlage anpassen. Auch Unzulänglichkeiten des Basslautsprechers konnten behoben werden, indem die frequenztrennung unterhalb des kritischen Bereichs stattfand. Somit war ein überziehendes Basses vermeidbar.Für mich ist dieses Produkt ein super Gerät um den Klang im Wohnzimmer zu verbessern.Aus diesem Grund vergebe ich auch fünf Sterne.
MUGG
Reviewed in the United States on November 16, 2024
I bought this after months of research not sure how the dice was going to roll,but after setting up the crossover frequency & volume this little sucker has some nice clarity and detail to my ears it comes with a 24 volt power supply,i have it in a home theater surround sound along with a single powered 15 & a powered dual 12 subwoofer box each with their own separate amplifier for a total of four subs,I have it connected to a single Skar Audio prefab 12 sub box with a Memphis 12 sub installed,everything is tweaked and playing nice, great sounds coming out of it not pushing it hard it's keeping up with the rest of the subs barely getting warm with usage.It shakes the wood paneling walls.I like it wouldn't have known size of a amplifier is not how big it is but what it can do with out taking up a lot of real estate in your room.
MeGallegos
Reviewed in Mexico on October 26, 2024
Tiene a mi gusto muy buena respuesta y no se le.percibe distorsion lo puse a un sub inalambrico jbl q se daño la barra ya q segun la bocina es de 300w @ 3ohm quedo muy bien me gusto la calidad de audio falta ver la durabilidad pero se ve muy bien
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