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Fosi Audio

Fosi Audio TB10D 600W TPA3255 Power Amplifier Home Audio HiFi Stereo Class D Digital 2 Channel Integrated Mini Passive Speaker Amp

    • Based on 685 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Nov 27
Order within 5 hours and 27 minutes
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Features

  • If you want to play your favorite songs entertainingly, a mini stereo amplifier is the best way to go. Fosi Audio TB10D is an analog input(RCA) Class-D audio amplifier that easy to install to build your home audio sound system.
  • MAX Power Output up to 600Watts. TB10D adopts TI TPA3255 high-performance Class-D power amplifier chip enabling true premium sound quality. TPA3255 features an advanced integrated feedback design and proprietary high-speed gate driver error correction (PurePath Ultra-HD). This technology allows ultra low distortion across the audio band and superior audio quality. The device is operated in AD-mode, and can drive up to 2 x 315 W into 4- load at 10% THD and 2 x 150 W unclipped into 8- load.
  • The high-efficient 2.0CH 300Wx2 desktop power amplifier can drive almost home large passive bookshelf speakers ensuring top-notch sound quality and is compatible with most sound equipment such as computers, DVDs, CD players, PC, laptops, TV, etc.
  • Mini classic simple design with bass, treble, and volume control. On the rear are banana plug connectors that can also accept a raw wire.
  • What you Get: TB10D amplifier x1, User Manual x1, 32V/5A Power Adapter x1(Note: You need a more powerful power supply to get the MAX 300W x2 power output, such as 48V/10A), AC Cord x1, 18-month worry-free warranty, and friendly customer service.

Item Dimensions LxWxH: 4.13 x 5.59 x 1.57 inches


Voltage: 230 Volts


Manufacturer: Fosi Audio


Mounting Type: Tabletop Mount


Brand: Fosi Audio


Item Dimensions LxWxH: 4.13 x 5.59 x 1.57 inches


Voltage: 230 Volts


Manufacturer: Fosi Audio


Mounting Type: Tabletop Mount


Brand: Fosi Audio


Number of Channels: 2


Product Dimensions: 4.13 x 5.59 x 1.57 inches


Item Weight: 1.3 pounds


Item model number: TB10D-US


Date First Available: April 27, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Nov 27

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Year after year, these inexpensive Chinese Class D amps are gradually getting better...
As a matter of background info, when these inexpensive Chinese-made Class D amps first started appearing, their sound characteristics were almost universally described as being thin, cold (in many cases, harsh in the upper frequencies), and fatiguing for long-term listening. But at the time, they were what they were, and they were selling like hot cakes due to their ridiculously low prices. As time went on, individual brands started producing models that slowly began improving - meaning, warmer with a fuller sound signature. Yet in the end, these models were still lacking in a number of areas. Fast-forward to now. We now have a wealth of updated class D models (most under $100 USD) that have begun to turn heads in a most positive way. The inexpensive class D sound has gradually experienced a metamorphosis - that is, audio reproduction now had a warmer overall tonality with a better overall balance. In addition, some of the newer releases began incorporating welcomed additions such as having removable/changeable Op-Amps - thus allowing the end users to improve the sound to their liking. Good examples of this are the likes of the Aiyima A07, A08 (older version), and the A300 - along with various DAC's. Upgrading these Op-Amps, in particular, to the discrete, more expensive types (made by Sparkos Labs, Burson, etc.), result in significant improvements to audio reproduction. I've owned/used 10 different Asian-made Class D amp over the past years, and when I received this new updated version of the Fosi Audio TB10D, I immediately discovered that it has a sound signature similar to many of the models out there with the Texas Instruments TPA3255 amplifier chip - that is dynamic and a bit warmer and fuller. Like select models using this TPA3255 chip, the user has the ability to use power supplies ranging from 24-48V varieties and the higher you go, the more wattage the amp is capable of putting out. With this Fosi TB10D, I was stunned at how small it is. It is roughly 3/4 to 2/3 the size of the smallish Aiyima A07 (both can use 48V power supplies if needed). The Fosi is well constructed and has a very solid feel, along with the knobs (not plasticky). The on/off switch in the front is very solid and convenient, to be sure. Now keep in mind that the TB10D does not have BT capabilities - it’s just a basic amp. Rather than use the supplied external power brick (32V), I had several high-quality linear power supplies on hand, which I could set to whatever voltage I wanted, up to 40V max. I set one of them to 40V and attached the Fosi TB10D. I then turned on the Fosi and let it warm up for 8 hours before I began listening. Having been an audiophile for well over 55 years now, I'm a firm believer in giving various audio components an initial time period to warm-up/break-in before doing any listening, because for most, sound qualities improve with a good warm-up/break-in period. As an aside, regardless of how long you have the TB10D powered on (I keep my gear on all the time), its case stays cool to the touch. I then connected the TB10D using 10 gauge professional cable (Blue Jeans Cables) terminated on the ends with banana connectors, to the KEF Q150 and Q350 speakers (alternating between the two). The TB10D was fed by a variety of DAC units using a custom-made 8-way in (1 out) RCA switcher custom-built by Maple Tree Audio Design from Canada. This enabled me to use a variety of attached DAC/Head-amp units to determine sound variations with the amp. OK - so let's discuss the audio reproduction characteristics of the TB10D: 1. Overall sound signature: Initially - like most other inexpensive class D amps - the sound is a bit thinner, slightly warm, but lacking in feel for that "you are there," immersive experience. As time went on, the overall sound signature warmed up more, became fuller, and had a nice, overall feel to the music. In other words, it is a very "nice" sounding amp to be sure. However, does the term "nice sounding" imply that it is a highly immersive, musical, and accurate sounding amp? Well, no... 2. Sound-staging is wider than some amplifiers, but not in the best category. But given its price-point the sound-staging does not disappoint, considering it's low price. 3. Bass capabilities: Very dynamic and fully present (when it's in the recording). In fact, on some recordings, I had to back off on my power subwoofer to balance things out. So for bass heads - once the amp is warmed up - you won't be lacking in the bass department. Does the bass have air and separation like better class AB amps - well, no it doesn't. But there is plenty of bass to go around. 4. Midrange and Treble capabilities: Very nice and smooth, however, like all class D amps have a tendency to do at times (but becoming rarer with each new release), some instruments may still come through with a slight "steely" quality to them, like stringed instruments in a large symphony orchestra. However, the TB10D does a much better job than most in this department. 5. Depth and air around the instruments: The TB10D does an average job here - nothing exceptional, yet good enough. However, for class D amps in general, this particular intangible quality is often elusive. Audiophile Qualities: For informational purposes, there are some intangible characteristics of "better" amps (i.e. class AB and class A versions) that can best be described as having qualities which cannot be measured in the traditional sense, yet can be experinced when they are present. These intangible qualities include variables such as: a. Being able to accurately convey the ambience of the performing venue. b. Being able to showcase the depth and air around various instruments. c. Being highly immersive - that is, the last veils (regardless of how slight they may be) have been removed between the listener and the music. d. Having correct instrumental timbre - that is, each instrument's tonal qualities are accurately showcased, often-times also referred to as “being musical.” Now, remember - I said that the TB10D is a very good-sounding amp (like many other contemporary models on the market today). However, "Good" does not necessarily translate into being immersive or highly accurate. I say this because overall - again, like many other class D amps - there is a slight (warmish) veil/tonality (in particular with the myriad of instruments in a symphony orchestra) that detracts from the feeling of "being there." This is to be expected really, because after all, this TB10D only costs around $70 to $79 (depending on where you purchase it from). Now if they gave this amp the capabilities like some Aiyima amps do - that is, being able to remove and change out the Op-Amps, then that could change the game significantly. But it is not to be - everything is permanently attached inside the Fosi TB10D. The only thing you can upgrade with this TB10D are the power supplies (and the types used). Now here's an important aside - Fosi Audio just released their much anticipated upgraded BT20A Pro, which is only a few dollars more. The “BT” designation means that it also has blue tooth capabilities. Here is the Amazon link to that model: https://www.amazon.com/Bluetooth-Audio-Amplifier-Integrated-Subwoofer/dp/B07JVFY27T/ref=rvi_sccl_3/132-5847888-2109744?pd_rd_w=I4NO7&content-id=amzn1.sym.f5690a4d-f2bb-45d9-9d1b-736fee412437&pf_rd_p=f5690a4d-f2bb-45d9-9d1b-736fee412437&pf_rd_r=VX88A3Q1VN4JW8WBRPV8&pd_rd_wg=w1Hd0&pd_rd_r=aa1ab336-57e2-4029-bb00-b37d82c939e0&pd_rd_i=B07JVFY27T&psc=1 The difference here also (and it's major) is that there are now 2 dual channel Op-Amps inside the BT20A that you can remove and upgrade! This will improve the sound substantially and bring it more in line with what you would hear with class AB amps. I just ordered mine and I intend on putting in two SS3602 Sparkos Labs Discrete Op-Amps (a version I've been using in the likes of the Aiyima A07 and A300 class D power amps, and the FX-Audio DAC-X6 Mk II and FX-Audio D01 Pro DAC’s with stunning results). Getting back to the TB10D, based on its low price and what you get, I am giving this Fosi TB10D class D amplifiers a 4-star rating. For its very low price, the TB10D punches far above its weight. It is a very pleasant amp to listen to and its small size belies the power you get, and it can drive many a speaker - large or small. I do strongly suggest that folks invest in "linear" power supplies that make a huge difference with all of your audio components (those components with external power supply bricks). With a linear power supply, there are no hums or other noises. All you get is pure, quiet power that contributes significantly to your audio output. I have several of these with different voltages (link below) that I use, and I also have one that was custom-made to allow up to 40 volts. With this version you can power two devices on the back (not just one), so if you have two devices using the same power, this one linear power supply can power both of them, and it shows you the voltage on the front LCD screen. https://www.amazon.com/gp/product/B09SVK9CQF/ref=ox_sc_saved_title_4?smid=A39KK3JMT5S2I5&psc=1 So folks, if you are on a very, very limited budget, you cannot go wrong with this Fosi TB10D class D amp. It's price, build-quality and musical pluses - all combine to earn an easy 4 stars. Now, I realize that all reviews are subjective, and that no two people may agree. Your mileage may vary. ... show more
Reviewed in the United States on April 10, 2023 by Bernd W. Herrmann
    • Using this to power 2 earthquake mqb-1 500 watt bass shakers *FAILURE UPDATE*
Review Image by Sean Sean
Review Image by Sean Sean
UPDATE So about ten days after I purchased this unit, got it dialed in and working right, it failed. I was listening to EDM music for about 2 hours and the bass shakers cut out all of a sudden. I touched the amp and it was very hot. It does not work anymore. I am returning it and purchasing a Gemini 3000 watt class AB DJ amp to power the bass shakers. This fosi audio unit may work if you modify the case so the heat sink has ventilation or better yet mount a computer fan on top of it with a hole in the case above the capacitors and the heat sink otherwise it will cook itself to death. I had my doubts that this tiny little box would have enough power to push 2 earthquake mqb-1 bass shakers attached to the frame rails of my reclining microfiber stanton couch. I was wrong! This setup works fantastic IF you "line drive" the signal meaning on your receiver you have to turn up the LFE channel to provide an increased signal on the rca line inputs. Once you do that these have no problem bringing EDM music and the latest movies to life during action scenes. Worth every penny! ... show more
Reviewed in the United States on October 23, 2023 by Sean Sean
    • Nice sounding Class D amplifier with fairly punchy bass
The upgraded Fosi TB10D is a very decent amp that is priced at roughly what a tank of gas will cost these days. It's very easy to use, and has the TI 3255 chip which can can do some incredible things at very low distortion levels. It comes with a 32V 5a power supply that can push around 65 watts @ 8 ohms and 125 w @ 4 ohm. Where it gets interesting is when a 48V 5a power source is used - it can push 110w at 8 ohm and 220w at 4 ohm per channel (per manuf specs). With 6 ohm speakers (what I mostly have) sound was robust and the numbers are right in the middle of the 4/8 ohm numbers. Quiet and clean in a 4" x 6" x 1.5" case. It doesn't get warm with the 32V power, but heats up several notches if pushed hard with the 48V. It's nice to have the option to increase power so easily on the fly, but the 32V is pretty sufficient and probably won't ever cause a heat issue. Fosi Audio makes a newer model V3 amp that uses the same TI chip and power supply, but it is specifically ventilated on the case for heat. The V3 has no tone controls, just a volume control. The knobs all feel good and smooth but the tone controls - not sure who designed the tone controls but they have 2 obvious flaws that won't bother some folks, but they bug me. 1 - Usually bass is on the left and treble on the right, like a frequency spectrum where low goes to high. They are reversed here, strange but they do work ok. 2 - Where is the neutral calibration mark? Not sure if straight up vertical is the 0 gain, with (-) to the left and (+) to the right. There is no indent, or notch at where neutral would be like most all amps with tone controls already have. It think the 0 position is closer to where 10 is on a clock face, rather than at 12 straight up. But for under $70 with the power supply included, I think it does perform pretty solid. Sound quality is good and the bass is also fairly punchy and vibrant. I've used this amp with Elac 6.2, Q Acoustics 3020, JBL 530, and also Infinity R253 towers. The amp did fine with all of those speakers. If you have a active subwoofer with high-level inputs you're good to use that from the L/R speaker terminals, otherwise I'd say the bass could stand on it's own merits. Depends entirely on the speakers. Perfect for deck use, and I don't need an expensive sub outside so no problem. Add a DAC with remote, and you can pre-amp the volume with the remote. Quite good but really about 4.3 out of 5. ... show more
Reviewed in the United States on July 7, 2023 by Kramer1

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