Fosi Audio TP-02 Subwoofer Amplifier Home Audio, Mini Bass Amp Mono Subwoofer Amp, with TDA7498E Chip 220W Volume and Frequency Control, for Powered Passive Subwoofers Bass Shakers

Bought the TP-02 to replace a dead Klipsch SPL-120 subwoofer plate amp that went bad. This amp was easy to hook up after I added passive input to the speaker cabinet. Wow! This amp really provides plenty of power for the speaker and the crossover works perfectly. Very pleased with the sound and it saved me from an expensive repair or replacement sub. Great value!

I have a 7 year-old Polk PSW110 subwoofer. Recently, its plate amp failed. The amp, while easy to replace, hasn't been available for quite some time. I found one on eBay, untested with no returns, so I passed on it. I couldn't find one on Facebook Marketplace. I called the U.S. repair facilities listed on the Polk audio web site. They would all repair the plate amp, but the least expensive facility quoted $100 to evaluate (applied to the repair), plus parts, labor, and shipping, with an estimated total cost around $200. I can buy a new, fairly equivalent 10-inch subwoofer for $230, so going the repair route was not cost effective for me. Then I decided to "think outside the box". What if I got an external amp, I wondered. I did some searching, and came across the Fosi Audio TP-02, which costs only $70, so I figured I'd give it a try. I was able to bypass the Polk's plate amp quickly and easily, thereby converting it from an active to a passive subwoofer. I'm happy to report that the TP-02 is well made, compact, easy to connect, and easy to adjust. Most importantly, I am very pleased with its performance. It provides deep, clean, extended bass response, with extremely low distortion. It can put out way more power than I need in my moderately-sized listening room. Thanks to the TP-02's low idle power consumption, I leave it turned on all the time. When my receiver is turned off, if I put my ear right next to the subwoofer, I cannot hear even the slightest amount of hiss, hum, or buzz. I consider myself to be an audiophile, and I enjoy listening to many genres of music. If you're looking for an excellent, cost-effective way to bring a powered sub back to life after its amp bites the dust, the TP-02 subwoofer amp is the way to go.

Amazing mini amp right here, works great on small subs that can take more wattage, this sub in the video is a 600w 8” boss audio sub, also bought here on Amazon, but the mini amp is really able to push good power to the sub even at low sub volume and frequency, and makes good sounding bass, no rattling or anything, just good clean, deep bass. I would 100% recommend for anyone interested in starting a room audio setup or home theater!

This paired well with two AuraSound AST-2B-4 Pro Bass Shakers installed to plates under my sectional seats. There is PLENTY of power even with the transducers in series, and the low-frequency cutoff adjustment negates the need for another filter/crossover. My only complaint is that at lower volume-knob settings, the adjustment is *VERY* sensitive. Just a minute amount of rotation to the knob's position results in a larger-than-expected change in volume/effect. A more logarithmic potentiometer is needed.

I use this with the Fosi MC331 integrated via a 3.5mm plugged cord. It's a simple set up that sounds great in my bedroom system. This little sub amp plays very cleanly with all the heft and detail that Class D amplification provides, especially in the low frequencies. I have the volume set at 1:00 and the crossover frequency set at about 100hz. The input sensitivity is fine for matching the MC331 integrated. There is no phase switch, but switching the speaker wire polarity is the easy work around if needed. I didn't. My small subwoofer now blends so well with the main speakers. It's noticeably quicker than the old $450 Class AB sub amp it replaced. It can play the sub louder to impressive levels, and exceeds my need for power playing even the heaviest music. For those seeking serious bass from larger drivers will be disappointed. "This ain't that." The form factor is good and the unit is attractive... but not as attractive as the MC331 case. I hope Fosi considers putting this same package into the new style case for more design continuity. Still, the combo looks great to me. I'm happily filling my life with more music and Fosi provides a cool, convenient way to have high quality audio reproduction for modest prices. I operate this amp for 8-10 hours per day and it doesn't produce any heat due to the high efficiency and has no perceivable impact on my power bill. This is a great, affordable answer to those needing a modest subwoofer amplifier in a small package. After a long life of having high end audio products, I really appreciate the niche that these products fill. It's an exciting time when quality and attractive audio products are now available to more people than ever. And, listening to music makes us a little less crazy. Rock on and hug your mom.

For how small and cheap this is, its amazing how well it works. Who knows how long it will last but so far we have used these in several projects and they have worked great!

Gave new life to old JBL Music 10 Sub. I have been using an old Sony Stereo Receiver to power the JBL Music 10 and had a Transistor fail and took out the entire stereo. This little Fosi Audio TP-02 Has more kick than the tired old Sony. the sound quality is amazing as well with zero distortion. It was also a great value as other similar replacements are 2 times a much. It also ties into my Harmon Kardon AVR 347 setup and fits perfectly. I would 10/10 Recommend the Fosi Audio TP-02 Sub Amp.

useing this to replace a powerd 10 inch subwoofer board... work's surprisingly good from this little device..make sure to tune the settings Thank You

This amp was purchased to power a Dayton BST-1 Bass shaker. It does it with out a sweat. It is used on a sim racing cockpit under the pedals. It never goes over half as the rig would just vibrate to much. Perfect when using Simvibe software on PC, clean sound and very powerful. I have just got another to go under the seat, so two amps, 2 Dayton 50watt BST-1 bass shakers. Perfect combination. Would easily recommend for Bass shakers. Cannot verify for music as not tested, used for that.

Nutze den Verstärker für 2 Bass-Shaker von Reckhorn im Parallelbetrib (4 Ohem). Funktioniert gut und die Leistung ist mehr als ausreichend.

Acheté pour amplifier le son de mon ancien mais bon actif subwoofer d’une vieille radio que je comptais jeter , suis tres content du résultat.

This little ripper replaced a home-built subwoofer theatre amplifier that kept our movies “thumping” for over 20 years. It weighed about 4 kg with a massive torroid coil transformer feeding the amplifier push-pull circuit. No matter what hubby did, he could not get rid of the low frequency hum when no input signal was coming in from the Yamaha theatre receiver sub output. Apart from that, it thumped the passive subwoofer speaker for two decades. We decided we needed a replacement for “old hummer”and chose this unit. It arrived and I was a little taken aback - it is 1/4 the size of the previous amp. I wasn’t sure what to expect. Needless to say, I need not have worried. This little unit packs a massive punch into the 8 inch, 6 Ohm subwoofer speaker and when there is no input, it is as quiet as a church mouse. Bye bye humming... We have to have the FOSI set at about 1/3 to 1/2 volume otherwise the sub overpowers the rest of the theatre sound and starts rattling our French doors leading into the theatre room. I get that it is new and you can never be assured of the longevity, but the quality from the outside looks and feels good and the output at a low volume setting is simply amazing - despite its miniature size. Clear and concise. And no idle hum. :-) Long may it stay this way!

Pequeño amplificador en clase D para subwoofer que incluye filtro pasa bajo, ideal para subwoofer pasivos