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PAM8403 Digital Power Amplifier

PAM8403 Digital Power Amplifier

Regular price Rs. 18
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  • Dual-channel stereo, high output power (3 w + 3 w power @ 5V and 4 ohms load).
  • Double panel wiring solves crosstalk.
  • Supermini design allows it to be easily placed in a variety of digital products.
  • 3W Output at 10% THD with a 4ΩLoad and 5V Power Supply.
  • Filterless, Low Quiescent Current and Low EMI and Low Noise.
  • Short Circuit Protection and Thermal Shutdown.

PAM8403 Digital Power Amplifier

The PAM8403 5V Two-channel Stereo is a 3W+3W, class-D audio amplifier, allowing it to achieve high-quality sound reproduction. The new filterless architecture allows the device to drive the speaker directly, requiring no low-pass output filters, thus saving system cost and PCB area.

You can power the pam8403 amplifier board 5v using your mobile charger or can be by a computer USB plug. You can use two speakers 3/5 watts on both sides L and R. And connect the Audio cord to the LTR portion. 

With the same number of external components, the efficiency of the PAM 8403 is much better than that of its Class-AB cousins. It can extend the battery life, which makes it well-suited for portable applications. 

  • Input audio should be via shielded wire for best performance.
  • Use a proper filtered power supply with good filter capacitors.
  • Take care not to short speaker wires else IC will get damaged.
  • Make sure power supply never exceeds 5.5V else IC will get damaged. Use a regulated power supply.


  • LCD Monitors / TV Projectors 
  • Notebook Computers
  • Portable Speakers 
  • Portable DVD Players, Game Machines 
  • Cellular Phones/Speaker Phones

Also check the 5V DC Mini Class D Pam8403 USB Power Amplifier Board available on Robocraze. It is a 3W, class-D audio amplifier with low Total Harmonic Distortion plus Noise (THD+N), enabling high-quality sound reproduction. The filterless architecture allows it to drive the speaker directly, eliminating the need for low-pass output filters and reducing system cost and PCB area. The amplifier operates on a 5V power supply and is designed for Bluetooth audio receiver module dedicated interfaces.

Package Includes:

  • 1 x PAM8403 Digital Power Amplifier


Model  PAM8403
Operating Voltage (VDC) 2.5 ~ 5.5V
Current Handling Capacity (A) 0.08
Load Can direct drive 4 or 8-ohm small speakers.
Dimensions  21 x 18 x 3(mm)
Weight  5 grams

Shipping & Returns

  • All orders confirmed before 3 pm IST are shipped on the
    same day, barring rare pickup delays on holidays or disturbances
  • Delivery time in Metro cities is 1-3 days, Others it is
    3-7 days. It varies based on location, reliant on courier services
  • Return window: 7 days from receipt unless stated
    otherwise. No refunds/replacements after
  • Returns only for non-working/damaged products are accepted
  • Initiate return requests to our customer service team via Support ticket or contact us at +91-8123057137
  • Refunds are processed within 3-4 working days post inspection and approval.

For more details, please check our Shipping and Return Policy

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1. Is PAM8403 is a good amplifier?

  • PAM8403 is 5V Two-channel stereo (3W+3W) Power Amplifier Board. It has a very small design that can fit easily in any electrical appliance. It can easily drive a 4Ω, 8Ω small speaker. PAM8403 amplifier features in-built short circuit protection which makes it ideal for beginners to use. At a very low prices It offers excellent high-quality audio output. Thus, it is best choice for DIY Audio Amplifier Projects. 

2. What is the use of PAM8403?

  • PAM8403 is a Class-D audio amplifier. One can easily connect the audio Aux to the PAM8403 Amplifier module and connect the other end of the Aux cable to the speaker. PAM8403 is used to amplify the audio by connecting it to a minimum 3W rating speaker. It can also be controlled using a Bluetooth module connected to phone/PC.

3. Can I bridge PAM8403?

  • PAM8403 cannot be bridged. This is because two sets of differential outputs cannot be bridged and diodes does not allow using its two outputs in parallel. .

4. What is PAM amplifier?

  • PAM 8403 Power amplifier is a Class-D audio amplifier module that can be connected to any device via Bluetooth and with a 3W Speaker. If you want connect a speaker with your mobile phone, PAM 8403 audio amplifier is an ideal module. It has 3 Watt + 3 Watt dual channel stereo and can be easily operated with 5V DC Voltage.