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Fosi Audio TB10D vs TPA3116D2 Bluetooth Stereo Amplifier

The Fosi Audio TB10D is the better-documented, more powerful amp: a TPA3255 chip rated 300W per channel at 4Ω, 2-8Ω support, and a 32V 5A supply in a 1.05kg case. The TPA3116D2 amp is the simpler, cheaper-feeling option, but it adds Bluetooth 5.3, which the Fosi lacks. Buy the Fosi for wired desktop or bookshelf setups that need headroom and clean specs; buy the TPA3116D2 board if you want wireless streaming and only modest power.

  • Choose the Fosi Audio TB10D if you want a wired stereo amp with real power headroom, published specs and 2-8Ω speaker support.
  • Choose the TPA3116D2 amp if Bluetooth streaming matters more to you than power and published measurements.

Prices

  • Fosi Audio TB10D: $55.00 at eBay (last seen Nov 9)
  • TPA3116D2 Bluetooth Stereo Amplifier: $9.99 at Amazon (checked today)
  • Difference: the TPA3116D2 Bluetooth Stereo Amplifier is $45.01 cheaper than the Fosi Audio TB10D at the latest prices (Nov 9 and Nov 10)
Fosi Audio
Fosi Audio TB10D

Fosi Audio TB10D

$55.00at eBayChecked Nov 9
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Pros
  • TPA3255 chip with strong power headroom
  • Full published specs: THD, SNR, frequency range
  • Handles 2-8Ω speakers
  • Ships with a 32V 5A power supply
  • Solid 1.05kg case for desktop use
Cons
  • No Bluetooth or wireless input
  • No built-in DAC, DSP or tone controls
  • Not bridgeable and not portable
  • RCA input only
T
TPA3116D2 Class D Power Amplifier

TPA3116D2 Bluetooth Stereo Amplifier

TPA3116D2 Class D Power Amplifier

$9.99at AmazonChecked 4 h ago
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Pros
  • Bluetooth 5.3 wireless streaming
  • Simple, compact Class D design
  • Easy to pair with phones and tablets
Cons
  • No published power, THD or SNR figures
  • TPA3116D2 chip is lower power than TPA3255
  • No stated impedance range or included supply
  • Few controls and no wired-only focus

What separates them

Fosi Audio TB10DTPA3116D2 Bluetooth Stereo Amplifier
Amplifier chipTPA3255, a higher-tier Class D chipTPA3116D2, an older, lower-power Class D chip
Rated power300W x2 at 4ΩNot published; TPA3116D2 boards typically deliver far less
Speaker impedance2-8Ω supportedNot stated
Wireless inputNone; RCA line input onlyBluetooth 5.3
Published audio specsTHD ≤0.3%, SNR ≥90dB, 20Hz-40kHzNone given
Power supplyIncludes a 32V 5A supply, DC 18-48V rangeNot specified
Build and weight1.05kg metal case, desktop formBare board or small case, light
FeaturesNo DAC, no DSP, no bridge modeBluetooth only; no tone or DSP controls listed

Price history

$95.08$9.99
Nov 9Nov 10
  • Fosi Audio TB10D: lowest $77.02 on Nov 10 at Fosi Audio.
  • TPA3116D2 Bluetooth Stereo Amplifier: lowest $9.99 on Nov 10 at Amazon.

Prices at every store

Fosi Audio TB10D

  • Fosi AudioNew

    In stock

    $77.02Free shippingChecked 3 h ago
    Visit Fosi Audio
  • PARTS EXPRESSNew

    In stock

    $79.99Checked 3 h ago
    Visit PARTS EXPRESS
  • Parts ExpressNew

    In stock

    $79.99+ $9.95 shippingChecked 3 h ago
    Visit Parts Express
  • eBayNew

    Availability unknownSold by kepe_9199 (100% positive, 39 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $55.00+ $6.83 shippingChecked Nov 9
    Visit eBay

Also available at

  • eBayCheck price at eBay

Store links may earn us a commission. Some prices via Klarna.

All 7 stores and price history →

TPA3116D2 Bluetooth Stereo Amplifier

  • eBayNew

    In stockSold by quickpick_supply

    $36.99Free shippingChecked 4 h ago
    Visit eBay
  • NeweggNew

    In stock

    $95.08Free shippingChecked Nov 8
    Visit Newegg
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $9.99Checked 4 h ago
    Visit Amazon

Store links may earn us a commission. Some prices via Klarna.

All 3 stores and price history →

Specs compared

SpecFosi Audio TB10DTPA3116D2 Bluetooth Stereo Amplifier
Power Amplifier ClassDD
Type of AmplifierStereo AmplifierStereo Amplifier
Output Power300Wx2 @4Ω—
Terminating Impedance2-8Ω—
Input ModeRCA—
Output ModePassive Speakers—
Frequency Range20Hz - 40kHz (±2dB)—
Input Sensitivity≤ 600mV—
THD≤ 0.3%—
SNR≥ 90dB—
Chip SetTPA3255—
DC Input RangeDC18V -48V—
Show all 33 specsShow fewer specs
SpecFosi Audio TB10DTPA3116D2 Bluetooth Stereo Amplifier
Device Weight1.05kg—
Power Supply32V 5A—
ConnectionsRCA (Line)—
DSPNo—
Multi-ZoneNo—
Built-in DACNo—
Power SourceAC Mains—
ColorBlack—
Automatic Speakers CalibrationNo—
Output per Channel (8 ohm) (W)300

What reviewers say

Fosi Audio TB10D

Owners of the TB10D generally praise its output and clean sound for a small, inexpensive Class D amp, and many use it on a desk or in a second system. Common complaints are the bare feature set, the single input and the fact that the full 300W figure needs a larger power supply than the one included.

What people mention
  • OutputPraisedOwners say it drives passive speakers loudly and cleanly for its size.
  • SizePraisedBuyers like how small and light it is on a desk or shelf.
  • HeatPraisedUsers report it runs cool as a Class D amp.
  • FeaturesCriticisedReviewers note the lack of volume control, tone controls, remote and headphone jack.

TPA3116D2 Bluetooth Stereo Amplifier

Owners of TPA3116D2 boards generally rate the sound as clean and loud for the size and cost, and like how little heat it makes. Complaints center on power supplies, idle hiss and the bare-board presentation of many versions.

What people mention
  • Sound qualityPraisedOwners say it sounds clean and gets loud for its size with efficient speakers.
  • Noise floorCriticisedSome report audible hiss or idle noise, especially at low volume.
  • HeatPraisedThe Class D design runs cool and rarely needs a large heatsink.
  • Power supplyMixedBuyers note the board needs a matched supply that is often sold separately.

Questions and answers

Which is better for powering bookshelf speakers?
The Fosi TB10D. Its TPA3255 chip is rated 300W per channel at 4Ω and supports 2-8Ω speakers, so it drives most bookshelf models with headroom. The TPA3116D2 amp publishes no power rating.
Does the Fosi TB10D have Bluetooth?
No. It takes RCA line input only. If you need wireless streaming, the TPA3116D2 amp has Bluetooth 5.3.
Which one sounds cleaner?
Only the Fosi publishes measurements: THD ≤0.3% and SNR ≥90dB. The TPA3116D2 amp gives no figures, so there is nothing to compare. On paper the Fosi is the safer bet.
Is the TPA3116D2 amp worth stepping up to the Fosi?
Yes, if you use wired sources and want more power and documented specs. Stay with the TPA3116D2 only if Bluetooth is your main input.
Which lasts longer?
The Fosi has a metal case and an included 32V 5A supply, which points to better thermal and power handling. The TPA3116D2 amp's build and supply are unspecified, so longevity is harder to judge.
Can either drive 2Ω speakers?
The Fosi TB10D is rated for 2-8Ω. The TPA3116D2 amp does not state an impedance range, so check its listing before pairing low-impedance speakers.

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Buying guides that pick them

  • Best cheap Class D amplifiers
—
BridgeableNo—
PortableNo—
3DNo—
ARCNo—
HDRNo—
Upscaling of ImageNo—
OutputsRCA (Line)—
Tube AmplifierNo—
DisplayNo—
Bluetooth—Yes
Bluetooth Version—5.3