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Fosi Audio TB10D 600W TPA3255 Digital 2 Channel Integrated Mini Passive Speaker Amp

$56
$79.99
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+29 Deal Score
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Fosi Audio via Amazon has Fosi Audio TB10D 600W TPA3255 Power Amplifier Home Audio HiFi Stereo Class D Digital 2 Channel Integrated Mini Passive Speaker Amp (Upgraded Version) for $79.99 - $24 when you clip the 30% coupon on the product page = $55.99. Shipping is free.

Thanks to Community Member Grayson73 for posting this deal.

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Key Features:
  • 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-Ω load at 10% THD and 2 x 150 W unclipped into 8-Ω 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, User Manual, 32V/5A Power Adapter (Note: You need a more powerful power supply to get the MAX 300W x2 power output, such as 48V/10A), AC Cord, 18-month worry-free warranty
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Edited May 4, 2023 at 02:45 PM by
Clip the 30% off coupon

https://www.amazon.com/gp/product/B08MJBG53V

20 amps compared and this amp was one of two that received A tier. https://www.youtube.com/watch?v=qc9XyNJuXFs

76 preference score. h" [audiosciencereview.com]https://www.audiosciencereview.com/forum/index.php?threads/fosi-audio-tb10d-amplifier-review.37826"

This amp made my Pioneer SP-BS22-LR sound amazing. Give it a try if you have a 2.0 system. Amazon has easy returns. I moved up to the BT30D Pro to power my passive 12" Infinity Beta subwoofer. I'm amazed at the power and sound quality of both of these little amps.
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Created 04-28-2023 at 10:21 PM by Grayson73
in Home Audio (7)
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Score +29
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$56
$79.99
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About This Product
    Product Name: [Upgraded Version]Fosi Audio TB10D 600W TPA3255 Power Amplifier Home Audio HiFi Stereo Class D Digital 2 Channel Integrated Mini Passive Speaker Amp
    Manufacturer: Fosi Audio
    Model Number: TB10D-US
    Product SKU: B08MJBG53V
    ASIN: B08MJBG53V
    Brand: Fosi Audio
    Item Dimensions LxWxH: 4.13 x 5.59 x 1.57 inches
    Item Weight: 1.3 Pounds
    Item model number: TB10D-US
    Manufacturer: Fosi Audio
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    Community Wiki

    Last Edited by Grayson73 May 4, 2023 at 02:49 PM
    20 amps compared and this amp was one of two that received A tier. https://www.youtube.com/watch?v=qc9XyNJuXFs

    76 preference score. "https://www.audiosciencereview.com/forum/index.php?threads/fosi-audio-tb10d-amplifier-review.37826"

    This amp made my Pioneer SP-BS22-LR sound amazing. Give it a try if you have a 2.0 system. Amazon has easy returns. I moved up to the BT30D Pro to power my passive 12" Infinity Beta subwoofer. I'm amazed at the power and sound quality of both of these little amps.

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    Featured Comments

    This is a great little amp per Randy The Cheap Audio Guy, whom I trust. It's got a TI chip. I've seen it around this price with a coupon, but I've never seen it for less and it's usually more. I got the AIYIMO A07 instead which has the same chip and sounds great.
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    > bubble2 75 Posts
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    Jason27104
    05-02-2023 at 07:42 PM.
    05-02-2023 at 07:42 PM.
    10%THD! That seems insanely high.
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    > bubble2 6,827 Posts
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    Frank_Nitty
    05-03-2023 at 10:37 AM.
    05-03-2023 at 10:37 AM.
    Anybody in the comments section have any experience using this brand/model of DAC?
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    Joined May 2017
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    > bubble2 68 Posts
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    Forksifter
    05-03-2023 at 04:37 PM.
    05-03-2023 at 04:37 PM.
    Would this be good for a turntable?
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    Joined Nov 2012
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    > bubble2 5,498 Posts
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    R3DTR1X
    05-04-2023 at 12:06 AM.
    05-04-2023 at 12:06 AM.
    I want but my wife tells me I have an electronics hoarding "problem". I buy lots of this crap and use it once. Help me plz
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    Joined Nov 2012
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    > bubble2 144 Posts
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    sdedalus1
    05-04-2023 at 12:15 PM.
    05-04-2023 at 12:15 PM.
    Quote from Jason27104 :
    10%THD! That seems insanely high.

    Nearly all chi-fi manufacturers just list the specs of the chip they use, which in turn are given at unrealistic 10% THD levels, obviously to make the wattage seem higher. Only independent testing will provide real useable numbers. Most people overestimate the W they need, so they should be taken with a grain of salt anyway …
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    Joined Nov 2021
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    > bubble2 75 Posts
    14 Reputation
    Jason27104
    05-04-2023 at 12:34 PM.
    05-04-2023 at 12:34 PM.
    Quote from BlackBabyJeebus :
    This is absolutely something you would put in your main stereo and keep for a decade, at least if you're pairing it with the right speakers. The fact that it's cheap doesn't make it inferior.

    I've heard a similar amp to this powering a pair of Klipsch Heresy III speakers and it was jaw dropping. If I had $3k to drop on a pair of speakers at the moment that would be my music listening setup, and I sure as heck would be keeping it for more than a decade.

    I find it hard to believe that anyone with any sense uses this with 3k speakers. 1% THD is moderately bad. You should really have below 0.7% for anything critical. 10% is straight up terrible. You could take this money, spend it at goodwill and walk out with a receiver that is literally 10x better in terms of distortion and several times better in terms of stereo wattage. This is mediocre for a desktop amp, much less living room.
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    Joined Dec 2004
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    > bubble2 1,493 Posts
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    Grayson73
    05-04-2023 at 12:40 PM.
    05-04-2023 at 12:40 PM.
    20 amps compared and this amp was one of two that received A tier. https://www.youtube.com/watch?v=qc9XyNJuXFs

    76 preference score. https://www.audiosciencereview.co...iew.37826/

    I was skeptical as well, but this amp made my Pioneer SP-BS22-LR sound amazing. Give it a try if you have a 2.0 system. Amazon has easy returns. I moved up to the BT30D Pro to power my passive 12" Infinity Beta subwoofer. I'm amazed at the power and sound quality of both of these little amps.
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    Last edited by Grayson73 May 4, 2023 at 12:57 PM.

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    Joined Oct 2021
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    > bubble2 231 Posts
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    BlackBabyJeebus
    05-04-2023 at 01:01 PM.
    05-04-2023 at 01:01 PM.
    Quote from Jason27104 :
    I find it hard to believe that anyone with any sense uses this with 3k speakers. 1% THD is moderately bad. You should really have below 0.7% for anything critical. 10% is straight up terrible. You could take this money, spend it at goodwill and walk out with a receiver that is literally 10x better in terms of distortion and several times better in terms of stereo wattage. This is mediocre for a desktop amp, much less living room.
    THD ≤0.3%

    https://www.fosiaudio.com/product...ier/tb10d/

    https://www.audiosciencereview.co...iew.37826/
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    Jason27104
    05-04-2023 at 01:23 PM.
    05-04-2023 at 01:23 PM.
    Quote from BlackBabyJeebus :
    THD ≤0.3%

    https://www.fosiaudio.com/product...ier/tb10d/

    https://www.audiosciencereview.co...iew.37826/

    Hey, that's better than I thought! It's not really rated the way Fosi says it is though. 300w stereo isn't happening. To get 88 watts in stereo THD had to be at 1% when speakers were 4ohm. Driving 8 ohm speakers THD was over 1% to get 66 watts of power. Is this fine for a desk or bedroom or something small? Sure, absolutely. There are other brands that offer similar features in a similar size package, but it isn't a terrible choice for a small backup setup. Is this driving 3k speakers? No. Not unless someone has no idea what they are doing. People with 3k speakers are accustomed to much more advanced features than this offers, with greater power and lower distortion. Their budgets also start at about 10x the price on the low end.
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    > bubble2 231 Posts
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    BlackBabyJeebus
    05-04-2023 at 01:56 PM.
    05-04-2023 at 01:56 PM.
    Quote from Jason27104 :
    Hey, that's better than I thought! It's not really rated the way Fosi says it is though. 300w stereo isn't happening. To get 88 watts in stereo THD had to be at 1% when speakers were 4ohm. Driving 8 ohm speakers THD was over 1% to get 66 watts of power. Is this fine for a desk or bedroom or something small? Sure, absolutely. There are other brands that offer similar features in a similar size package, but it isn't a terrible choice for a small backup setup. Is this driving 3k speakers? No. Not unless someone has no idea what they are doing. People with 3k speakers are accustomed to much more advanced features than this offers, with greater power and lower distortion. Their budgets also start at about 10x the price on the low end.
    Your comments make no sense. The fact that speakers cost $3k has no bearing on the power requirements or good amp pairings. Klipsch Heresy IIIs, which are the speakers I mentioned earlier, are easily driven to THX reference levels (105dB) with 30 clean watts/channel. That is easily loud enough to shake the whole house and have the neighbors asking you to turn it down. While a person could obviously spend an essentially unlimited amount of money on an amp, recognizing when a much less expensive solution is just as good for a particular use case is just intelligent system building.





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    Jason27104
    05-04-2023 at 02:03 PM.
    05-04-2023 at 02:03 PM.
    Quote from BlackBabyJeebus :
    Your comments make no sense. The fact that speakers cost $3k has no bearing on the power requirements or good amp pairings. Klipsch Heresy IIIs, which are the speakers I mentioned earlier, are easily driven to THX reference levels (105dB) with 30 clean watts/channel. That is easily loud enough to shake the whole house and have the neighbors asking you to turn it down. While a person could obviously spend an essentially unlimited amount of money on an amp, recognizing when a much less expensive solution is just as good for a particular use case is just intelligent system building.

    The point is that if your listening to 3k Heresy IIIs there is no reason to use a discount chi-fi amp that punches above is weight, but is in ultra featherweight class. If you only want 30 watts for those they are likely going to be from a vintage tube amp. Being decent and capable of powering super sensitive speakers doesn't mean people would ever use it for that purpose. These things live in offices, guest rooms, garages and boxes when they are inevitably replaced. No one is using this as a primary amp for their main listening speakers.
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    > bubble2 231 Posts
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    BlackBabyJeebus
    05-04-2023 at 02:24 PM.
    05-04-2023 at 02:24 PM.
    Quote from Jason27104 :
    The point is that if your listening to 3k Heresy IIIs there is no reason to use a discount chi-fi amp that punches above is weight, but is in ultra featherweight class. If you only want 30 watts for those they are likely going to be from a vintage tube amp. Being decent and capable of powering super sensitive speakers doesn't mean people would ever use it for that purpose. These things live in offices, guest rooms, garages and boxes when they are inevitably replaced. No one is using this as a primary amp for their main listening speakers.
    You can say it all you want, but you'll still be wrong. I know a person personally who uses a Fosi amp as the primary amp for their ~$3k main listening speakers. He originally decided to try this amp based an the recommendations of many, many people who all also use similar amps as their primary amps. Used to power extremely efficient speakers, these amps have distortion low enough to make you weep tears of joy. Having $3k to spend on speakers doesn't automatically put someone in a category where they feel the need to waste money on an expensive amplifier when an inexpensive amp already provides perfection.
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    > bubble2 1,493 Posts
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    Grayson73
    05-04-2023 at 02:32 PM.
    05-04-2023 at 02:32 PM.
    Quote from Jason27104 :
    Hey, that's better than I thought! It's not really rated the way Fosi says it is though. 300w stereo isn't happening. To get 88 watts in stereo THD had to be at 1% when speakers were 4ohm. Driving 8 ohm speakers THD was over 1% to get 66 watts of power. Is this fine for a desk or bedroom or something small? Sure, absolutely. There are other brands that offer similar features in a similar size package, but it isn't a terrible choice for a small backup setup. Is this driving 3k speakers? No. Not unless someone has no idea what they are doing. People with 3k speakers are accustomed to much more advanced features than this offers, with greater power and lower distortion. Their budgets also start at about 10x the price on the low end.
    Corrected link. "https://www.audiosciencereview.com/forum/index.php?threads/fosi-audio-tb10d-amplifier-review.37826"
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    > bubble2 1,493 Posts
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    Grayson73
    05-04-2023 at 02:35 PM.
    05-04-2023 at 02:35 PM.
    Quote from BlackBabyJeebus :
    You can say it all you want, but you'll still be wrong. I know a person personally who uses a Fosi amp as the primary amp for their ~$3k main listening speakers. He originally decided to try this amp based an the recommendations of many, many people who all also use similar amps as their primary amps. Used to power extremely efficient speakers, these amps have distortion low enough to make you weep tears of joy. Having $3k to spend on speakers doesn't automatically put someone in a category where they feel the need to waste money on an expensive amplifier when an inexpensive amp already provides perfection.
    I agree. The Pioneer SP-BS22-LR made me cry with this amp because the speakers are that good.
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    > bubble2 5,101 Posts
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    Parato Optimal
    05-04-2023 at 04:09 PM.
    05-04-2023 at 04:09 PM.
    FYI the Ayima A07 which Randy loves and rates in the "A" tier along with this TB10D is currently $56 after 30% off coupon on the Zon. It doesn't have tone controls. It has a 3.5mm line out for sub. I think the A07 has better THD but I'm not certain.

    There's an A07 Pro that's currently at $100. It adds tone controls and BT. A guy on Youtube bridged two of them. You accomplish that with soldering or simply with RCA cables.
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    Last edited by Parato Optimal May 4, 2023 at 04:39 PM.
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