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Two small amplifier boards and two compact speakers, square black drivers with silver magnets, on a plain surface

Pyle PAM8403 3W 8Ohm stereo speaker kit

SKU CH-9074-F6TJ0

Two PAM8403 amplifier boards and two 3 W 8 Ω mini speakers run on 2.5–5.5 V USB power for portable stereo sound

  • Spec summaryNO, ALMOCN, 3 W Audio Stereo Speaker, Woofer
  • Team affiliation1 Piece
  • Audio inputsAuxiliary
  • Power output3 W
  • Driver sizeWoofer
  • Measurements120 × 120 × 25 mm 4.72 × 4.72 × 0.98 in
  • Two-channel stereo output delivers 3W+3W power for clear audio
  • Class D amplifier with LC filter runs directly from USB 5V supply
  • Excellent noise suppression keeps output silent when no signal is present
  • Full-range frequency response from 500Hz to 20kHz covers voice and music
  • Compact 120×120×25mm boards and speakers fit tight enclosures

Compact stereo speaker kit

The Pyle PAM8403 kit provides two 3-watt, 8-ohm mini speakers and matching Class D amplifier boards. It suits hobbyists building portable audio into robots, advertising displays, game cabinets or USB-powered desktop setups.

Check power and connections

Each amplifier board runs on 2.5 V to 5.5 V and draws power from a USB port or similar 5 V source. Verify your project can supply steady 5 V and that the JST-PH 2.0 mm speaker connectors match your wiring plan.

Thermals noise and power draw

The Class D modules run cool with no heatsink needed at 3 W per channel. With no signal the boards are silent at close range. Total draw stays within a standard USB 5 V supply, and the 84 dB sensitivity speakers cover a 500 Hz to 20 kHz range.

How it compares

Measured against everything we stock in PA Systems & Powered Speakers, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 99% of the 224 comparable items (median $67.99).

Specifications

Product
Brand namePyle
Model nameNO
Product typeDynamic Microphones
Accessory categoryNO
Audio & video
Audio inputsAuxiliary
Driver sizeWoofer
Power
Power output3 W
Size & build
Measurements120 × 120 × 25 mm 4.72 × 4.72 × 0.98 in
In the box
Package contentsNO
More details
Team affiliation1 Piece

Questions about this item

What comes in the package and what else do I need to make it work?

The package includes two PAM8403 amplifier boards and two 3W 8Ohm speakers with JST-PH2.0mm connectors. You must supply a 2.5V to 5.5V power source such as a USB port or 3.3V/5V regulator, plus an audio source with an auxiliary output.

How do I choose between the listed voltage options for the amplifier boards?

The boards accept any input from 2.5V to 5.5V. A standard 5V USB supply delivers the full 3W per channel, while 3.3V operation is also supported at slightly lower output. Select the voltage that matches your available power rail.

What does the 3W rating mean when the speakers are driven by the PAM8403 boards?

Each board can deliver 3W into an 8Ohm load at 5V, giving 3W+3W stereo output. The speakers handle 3W rated and 8W maximum power with 84dB sensitivity and a 500-20kHz frequency response.

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