ATOM Speaker Kit (NS4168)

by M5Stack

ATOM SPK is an audio player that works with the ATOM master controller. Built-in I2S digital audio interface power amplifier chip NS4168, with automatic sampling rate detection, adaptive functions, and can effectively prevent audio signal distortion.

The integrated TFCard card slot is convenient for saving and reading audio files while the 3.5mm headphone jack and external speaker interface mean users can play audio through external headphones or speakers.

ATOM SPK Some IO conflict with ATOM Matrix's built-in hardware, so ATOM SPK is only applicable to ATOM LITE


  • Power amplifier chip NS4168
  • I2S serial digital audio input interface
  • Support a wide range of sampling rates: 8kHz~96kHz
  • Automatic sampling rate detection, adaptive function
  • TFCard slot
  • Headphone jack
  • Speaker interface


  • 1x ATOM Lite
  • 1x ATOM SPK
  • 1x 1W Speaker
  • 1x M2 Allen key
  • 1x M2*8 cup head machine screw
  • 1x TYPE-C USB Cable(20cm)


Specifications Parameters
Power amplifier chip NS4168
Amplifier output power 1W(VDD=3.3V)
Headphone jack 3.5mm
Speaker interface 1.25mm-2P
Speaker power 1W
Net weight 18.6g
Gross weight 37g
Product size 24 x 48 x 18mm
Package size 54 x 54 x 20mm