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

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

I somehow blew the amp of my van's Edge 10" EDBA active subwoofer. Despite optimistically swapping out some capacitors it was beyond my skill to repair. It seemed a shame to throw out the whole unit, so snipped out the speaker wires from the amp circuitry and threw the circuitry away.This Fosi TP-02 subwoofer amp drives the "now passive" (4 ohm?) Edge 10" speaker nicely. The Edge speaker wires connect to the two passive sub output posts on the back of the fosi amp. I now have it installed on a home sound system. I have the volume only a "third to half" of the way up and it is more than enough thrumping bass for a 5m by 5m room using the supplied power supply... any more on the dial is overpowering despite the the amp's power (200W "max" or 150W rms at 4ohm according to manual) being much lower than the speaker unit's original active rating (250W rms)... most use cases will not need to drive the speaker at anywhere approaching its maximum capability.Unlike another reviewer, the unit I was supplied with has the two dials, one for volume and one for subwoofer frequency as shown in the product description.To my ears, feet, and chest, the amp provides the warm tones and thumping bass I'm seeking and the frequency dial is to me vital in amplifying the frequencies I want depending on the music I'm listening to.I'm no audio expert so take this all with a pinch of salt.Well pleased with the amp and salvage of a piece of kit otherwise destined for landfill.

It's amazing. Used with an old passive subwoofer and the results are quite astonishing. I'm hearing things in the bass I've never heard before. All without distortion. Just pure bass. Thinking of buying another to replace the amplifier in my other subwoofer because this amplifier is better.

The seller was helpful when asked questions. The only problem is that the seller does not have any dedicated user manual for this subwoofer amplifier. If they provide one with some technical guidance on how to set the volume level when installing will be very helpful for non-technical clients. A graduated volume knob will also be useful for setting up. Apart from this, the product performed very well and delivered an excellent sub bass sound after trial and error adjustments on listening subwoofer output together with the other surround sound speakers. Another good point is that the power supply can take the whole 120V to 230V range, 50 or 60Hz, and comes with a moulded UK plug. Recommended for use with upgrading passive subwoofers with the latest AV receivers that have only sub woofer pre-out and one does not want to do away with a good existing passive subwoofer. Recommended.

My sub has never sounded this good!I don't have the volume more than a quarter and the power and depth blew me away.Paired this with an Onkyo SR393.. lovely jubbly

Great value. Good quality build and sound. Very easy to use. Good bass sound . Easy to use. Very compact size. Lots of power.

The media could not be loaded. I was asked to take a look at my Mums sound system a couple of weeks ago, she reported a hum that made listening unbearable.I found high DC voltage on the Phono lines and traced it back to the Auna sub back plate circuit. I cut the mains to both Subs as there was high voltage to the backplate of one that gave me an electric shock! I didn't see the point in repairing the circuit, so I ordered a pair of Fosi Audio TP-02 sub amplifiers.I wasn't expecting this kind of performance.My late Father's favourite song to test HIFI systems was Tomita Golliwogs Cakewalk.My Mum requested the we put it on to test her upcycled setup, we did just that.30 seconds in, we all got hit with emotion. There wasn't a dry eye in that living room when playing this song. All 4 of us where where ugly-crying in amazement.Thank you Fosi!!!We ended up spending all day and night re-listening to all our favourites like it was the first time we had heard them...What an amazing pairing this turned out to be.Again thank you Fosi, whatever you are doing, it's magic, please don't stop!

When I upgraded my hi-fi, the new one only had a signal not speaker driver for the sub-woofer, as in recent years, power sub-woofers have replaced the passive ones. So I needed a simple little amplifier to fix the problem and this does the job well