Evan Berendt—December 30, 2025
The media could not be loaded. 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! Read more
Customer—November 21, 2025
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! Read more
Caleb W.—December 11, 2025
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. Read more
Eileen the Artful Crafter—February 27, 2019
I bought this to replace a very old Carver amp that I was using to control the subwoofer portion of my bi-amped speakers. Unfortunately it gave up the ghost after over 30 years of service. Unlike the Carver these amps do not pick up the sound adjustments/volume of my AV receiver/amplifier. At first the bass not only overwhelmed the sound spectrum, it also was louder than the dialog and music on the rest of the sound track. I had to adjust the volume to barely above the on position to get a nicely balanced sound stage. However it is VERY easy to turn these knobs, e.g. in dusting the top of the amp which means hunting for the sweet spot all over again. There are no markings on the knobs so you have to guess where they were set before being accidently moved. It does take a week or so before the sound warms up nicely. If properly adjusted they provide a nice bass undertone to movies and tv shows and can shake the room when needed. (I don't listen to music much on my system.) I wish it was easier to keep the knobs from moving around or that there were markings available to make it easier to reset them if they do get accidently moved. Overall these little amps are worth the cost and effort to set them up. Read more
Ken & Doa—June 26, 2025
This thing packs a lot of punch for it's size! I have it powering a Skar Audio IX-8 D4 8" subwoofer in a slot ported enclosure as the low end for my computer sound system. This amp puts out way more power than the IX-8 needs, so I've only got the volume on this critter turned up about 25% and it sounds great. I like it so much that when a friend's powered home theater subwoofer's plate amp failed, I recommended this as an alternative to replacing the sub. He purchased it and is also very happy with it's performance and value. My desktop sound system consists of this amp for my sub, a Fosi Audio tube pre-amp, and a Fosi Audio 2x50 watt amp for the mains. The sound that comes out of this setup is nothing short of amazing! I highly recommend Fosi Audio products. They are excellent quality and last a long time. The tube pre-amp and two channel amp have been in service since 2016! Read more
Jim Kehoe—November 21, 2025
I purchased this to use with a bass shaker on theater chairs. I had a few questions about configuration so I email support. I had two responses within the hour. They answered all of my questions. I am amazed at how well this little amp performed. It will shake you out of the chair. Its so good I am going to purchase one for each chair so each person can adjust their own experience. I highly recommend this product. Read more
Dennis G jones—November 14, 2025
I’m blown away by the ease of installation, and how powerful this little amp is. It out performs my 300$ plate amp on my Polk ps505 subwoofer. I highly recommend this amp ! Plus it has a sub out put too ! Read more
Kevin stanley—January 1, 2026
Functions just as advertised the price is pretty good for what you get and it seems to sound and work great with my 10-in subwoofer. Read more