TB10D

This little box of miracles beggars belief, but before I go into details, let me first explain my set-up as I'm sure many of you may be planning something similar. I'm using a Samsung smart TV as an entertainment hub (there's Blu-Ray input, Freeview, Netflix, Rakuten, and Spotify or Deezer, and both Bluetooth and USB music interfaces, plus countless radio stations). Naturally I wanted to use the TV's ARC HDMI output so as to have volume control from the TV remote. To these ends I connected a LiNKFOR HDMI DAC to my TV's HDMI ARC port, which talks to the FOSI Amplifier through RCA cables. My speakers are a pair of Monitor Mk2 Audio Bronze two way units, tethered on fat copper cables. This little amplifier, with the DAC, cost over six times less than my prior Marantz streaming amplifier (and that only lasted as long as its meagre warranty). In my own acoustic environment I have the treble at 10 o'clock and the bass at 2 o'clock. The rich, clean, and accurate, sound quality deceives you into thinking you must have shelled out a lot more money that you did. A very great deal more. In fact I can hear fine detail that my Marantz NR1200 receiver could not ever render through the same speakers. Distortion is imperceptible at any satisfying volume level, and I have had it at levels which made the wife's hair stand on end. With the standard FOSI power brick easily obtain 75w RMS per channel, with scope for more. This is already far more than needed for my listening area. My FOSI volume control stays at 12 o'clock, and there's absolutely no reason to crank it any further clockwise. I'm very impressed with the performance, and in terms for value for money - gobsmacked. Nine months "after taking the red pill" I ordered a slightly more complex TPA3255 chipset based Class D Amplifier with Bluetooth, plus a DAC, for my digital-self - as well as a preamp so that I can cater for my retro-self (and enjoy my headphones and play vinyl as well). A week later I went back to the purity of this TB10D, and substituted the Fosi PSU brick for a cleaner PSU which is made by "Mean Well" and marketed by RS Components. The DRP-480S-48 makes the TB10D even more of a performer (and I'm not just talking of volume here!) since it outputs a very clean maximum of ten amps at 48v, and could power far bigger speakers than my Audio Bronze cabinets. PS/... My attention has been drawn to one of 'those' so called 'influencers' that publishes YouTube reviews "for a living", because there is a lousy review of the Fosi TB10D by cheapaudioman. He rants needlessly for almost half an hour about white noise and hiss, electrical arcing, and a few other subjective problems (as he sees them) with the amplifier. My suspicion is that he simply has an axe to grind with Fosi products, and his review only covers a prototype he obtained, which is hardly relevent (a bit like him...)

Paired with some old eltax 3 speakers I’m amazed at the sound quality and punch. Great amp well worth the price . I’d been looking at branded amps 3 or 4 x the price but this got good reviews and for the bargain price I’m happy I took the gamble .

This product helped me get back into hi fi after a 20 year break, good clean clear sound. Perhaps a touch too bright, especially when pushed, but what do you expect for the money. I've since moved on to a class ab amp, for significantly more money which sounds more sophisticated but you pay for it.

I saw a review for the revamped version and thought you know what, the price seems reasonable to give myself a go at the class D type amps. I am not quite sure what I was expecting, I was hoping for a decent sound at a good enough volume for my small room and to work with some old Cambridge Audio S30 speakers I have lying around. So, I have a Fiio K5 pro connected as a preamp/DAC, an old laptop as the source, and the afore mentioned speakers. I am not sure quite what I was expecting but it wasn't this, it sounds great, not going to get too techy about these things but can I hear everything? yes, is it loud enough for my small (11'x10') room? my goodness yes, though of course there has to be some consideration for the neighbours. A very decent full sound from this setup especially for the price, and I put the audio from the TV through it via the optical and that's really decent too. No Sub of course, but in this small room the sub can be overwhelming not just for me but very definitely for the neighbours below. The bottom line is for the price, it sounds great and is tiny and out of the way, built-in power might be nice but really not the end of the world and it takes a little time to get used to the fact that the bass and treble controls are the "wrong" way around. I would totally recommend it if you want to breathe new life into things you have lying around or even if you want to create a small but powerful system from scratch, a pair of decent speakers and you are away. If there is better than this for the price then get it, because blimey this is good.

Powerful little amp for my home studio.

This is a surprisingly good little amp, very clear and VERY powerful. Hi/Lo EQ works very well.

Review: follow-up I recently had the pleasure of engaging with Fosi Audio regarding a concern I had, and I must say that the entire experience left me thoroughly impressed. From the initial contact to the resolution, its exceptional communication, swift response, and effective solution truly exceeded my expectations. First and foremost, I would like to commend Fosi Audio for their outstanding communication throughout the entire process. Every interaction was met with professionalism and attentiveness. Its representative was an attentive listener and made sure to address my query and concern promptly. It was evident that they genuinely cared about customer satisfaction and were dedicated to providing a positive experience. Moreover, I am delighted to express my utmost satisfaction with the solution provided by Fosi Audio. It took my concern seriously, assessed the situation diligently, and presented me with a resolution that not only met but exceeded my expectations. Its commitment to resolving the issue in a manner that left me completely pleased is a testament to its dedication to customer service. What truly set Fosi Audio apart was their swift response. As soon as I reached out to it with my concern, it wasted no time in acknowledging my message and initiating the necessary actions. Its responsiveness was impressive, and it instilled a sense of confidence in me that my concern was being taken seriously and would be addressed promptly. The efficiency with which it handled the matter was truly commendable. Based on my experience, I can wholeheartedly say that I will be more than happy to place future orders with Fosi Audio. Its exceptional communication, prompt response, and effective solution have earned my trust and loyalty. It is rare to come across a company that prioritises customer satisfaction to this extent, and I am confident that my future interactions with it will be just as outstanding. In conclusion, my recent experience with Fosi Audio was nothing short of exceptional. Its great communication, swift response, and satisfying solution demonstrated its commitment to providing the best customer experience possible. I highly recommend Fosi Audio to anyone seeking a reliable and customer-centric company. I look forward to continuing my relationship with it and placing future orders without any hesitation.

Good sound quality, but a bit susceptible to interference noise pick-up when used in a PC environment, although this could just be down to my-set-up.

Worked exactly as expected…

Bought it for my bose 301 Series V. I love it, the quality and the size of the device is perfect for my work desk

If you are considering purchasing a stereo Class D amplifier and you don't require Bluetooth, digital inputs or balanced inputs then the Fosi Audio TB10D is a great choice. The TB10D stereo amplifier, when paired with a small music streaming device such as one of the WiiM music streamers (also available on Amazon), becomes half of a shoebox sized streaming audio system. You would just need to add a pair of passive (non-amplified) speakers. The bass frequency response of the TB10D was noticeably absent when first powered on. After about a half hour of operation the bass finally showed up and all was good. I leave the TB10D powered on as the standby power draw is very low. [Update: I measured the standby power consumption of the TB10D. Plugged in, not switched on, 1.0 Watt. Switched on, no input signal, power consumption is 2.5 Watts.] Even though I know that the location of the bass and treble tone controls on the TB10D are reversed, as compared with most other amplifiers and receivers with the treble control being on the left and the bass control on the right, I routinely forget and grab the wrong tone control. The speaker binding posts are small and close together. This is not an issue as I use banana plugs when connecting the speaker wires to the TB10D. Note that there is no headphone connection on the TB10D for wired headphones. If you need a small, inexpensive good sounding headphone amplifier for wired headphones consider the Fosi Audio P2 headphone amplifier. The TB10D's available output power, ~50 Watts per channel when used with 8 ohm speakers, with the included 32V/5A power brick is adequate for use in my kitchen audio system. The case and power supply of the TB10D remained cool to the touch even after extended listening (I measured 72F). If you have a large room, lower efficiency speakers, or desire audio levels exceeding ~85dB you should consider a more powerful amplifier. You can change the supplied external power supply for one rated for 48V, however this will increase the overall cost as well as increase the operating temperature of the TB10D. Within its limitations as far as output power, input options (one pair of RCA connections, no digital inputs, no balanced inputs), outputs (one pair of stereo speakers), no Mono mode switch, no BT, no Sub out, no headphone connection or remote control, the Fosi Audio TB10D is a very good choice. I found the sound of the TB10D when powering 4 ohm, 6 ohm and 8 ohm speakers to be consistently smooth, full sounding and non-fatiguing with a variety of music even after prolonged listening. I assembled a complete 2-channel audio system of exceptional value that can fit in a shoe box. Each of these products is currently available on Amazon. I chose the Fosi Audio TB10D amplifier that is the subject of this review. I added the well reviewed, amazingly compact WiiM Mini music streamer. [Update: I chose a pair of Saiyin Passive Bookshelf Speakers, 2-Way Passive Speakers, 3.5" Woofer & Silk Horn Tweeter that are sold on Amazon. I can't say enough good things about this small desktop speaker; see my separate review of the Saiyin DS6700M speakers.] This system is capable of filling almost any size room in a home with great sounding music. The TB10D amplifier's tone controls and the WiiM Home app's equalizer settings can be used to adjust the bass/midrange/treble output of the speakers.

Excellent et très puissant, très bon son , je l’ai installé pour mettre 8 enceinte de 150 W autour de la piscine il chauffe même pas et le son est extraordinaire. si vous cherchez un ampli puissant, de très bonne qualité, à un coût très modéré, n’hésitez pas une seconde.

Was actually really blown away by this amp. It's my first time buying Class-D amplification. This thing sounds so clean and flat in general. No noise detected, no hum, no heat from the amp and I can't believe how much power comes out of this tiny thing. Treble and Bass Controls sound nice. Completely replaced my old bulky Stereo Amplifiers so I'll definitely buy another one to have for my other pair of Passive speakers. Compact, Clean simple great power amplification.