Stereo 20W Class D Audio Amplifier



  • Adafruit
Availability: Temporarily Out Of Stock

Out of Stock - Available on Backorder

SKU: BOB-049 Manufacturer: Adafruit Industries Mfg Part Number: 1752 Categories: , Tags: , , , ,



This small breakout is actually a powerful two channel amplifier! The board can drive a pair of 20W 4-8Ohm impedance speakers. Power the board with 5-12VDC via the DC barrel jack and plug a stereo line level signal into the 3.5mm headphone jack and that's all there is to it!

Use a single 1KΩ pot (we include one) to adjust volume analog-style. Or hook it up to your favorite microcontroller and send I2C commands to set 64-steps of volume amplification.


  • Power from 4.5V-14V DC voltage
  • 20mA quiescent current (or put into shutdown for 1uA quiescent)
  • Use DC or AC coupled line-level input, up to 3Vpp
  • Low 0.04% THD+N
  • Up to 93% efficient (88-93% typical)
  • Up to 29.5dB max gain
  • 20W Stereo Output (4Ω, VDD = 12V, THD+N = 10%)
  • Integrated Click-and-Pop Suppression


  Difficulty Level

Soldering Skill: Beginner
Prototyping Skill: Beginner
Programming Skill: N/A

  Product Certifications

  Product Attributes

Weight: 20 g

  Warranty Policy

This product has a 30 Day Warranty from the date of delivery. The item must not be modified, abused, incorrectly hooked up, or used for purposes outside the original scope of design.

  Return Policy

This product is returnable Within 14 Days of delivery for a store credit. Item must be unopened, unused, and in re-saleable condition.

More Information:
For more information on our Warranty and Return Policies, please consult our   Terms of Service


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