Overview
This listing is the I2S amplifier module packed with a 3580 cavity horn. The amplifier is the NS4168 Class-D brick: it takes I2S audio and drives the speaker directly. The horn is the acoustic part named on this product.
Features
- NS4168 Class-D amplifier plus a 3580 cavity horn
- I2S input from 8 kHz to 96 kHz
- No external DAC
- Channel select on the CTRL pin
- Click suppression when power is switched
Specifications
- Amplifier output: 2.5 W at 5 V into 4 ohm
- Amplifier supply: 3.0-5.5 V
- THD: 0.2% at 5 V, 4 ohm, 1 W
- Efficiency: 80% at 5 V, 4 ohm, 2.5 W
- Speaker on this listing: 3580 cavity horn
What's in the box
- NS4168 I2S amplifier module
- 3580 cavity horn
Tutorials
Wiring, sample code, and project steps are in the Keyestudio Wiki.



