# Picar-x using a Adafruit Stereo 3.7W Class D Audio Amplifier
**URL:** https://forum.sunfounder.com/t/picar-x-using-a-adafruit-stereo-3-7w-class-d-audio-amplifier/1865
**Category:** Robotic kit for Raspberry Pi
**Created:** [October 25, 2024, 9:01pm UTC](https://forum.sunfounder.com/t/picar-x-using-a-adafruit-stereo-3-7w-class-d-audio-amplifier/1865 "2024-10-25T21:01:05Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@oakguy](https://forum.sunfounder.com/u/oakguy)
#### Post date: [October 25, 2024, 9:01pm UTC](https://forum.sunfounder.com/t/picar-x-using-a-adafruit-stereo-3-7w-class-d-audio-amplifier/1865/1 "2024-10-25T21:01:06Z")
Hi. I would to use this amplifier to run the sound through the Pi audio jack and into my amplifier. I would need to change the ALSA settings. But not sure if its possible to get the audio off the Robot Hat or not as well. What would I change to not channel sound through the hat and channel it through the PI itself?
Or as another option, should I use a 12C amp like the Adafruit TPA2016 and channel sound through the bus?
Thoughts
Thanks - Guy
---
### Author:  [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)
#### Post date: [October 31, 2024, 2:29am UTC](https://forum.sunfounder.com/t/picar-x-using-a-adafruit-stereo-3-7w-class-d-audio-amplifier/1865/3 "2024-10-31T02:29:40Z")
If you run the i2samp.sh script, it will configure the default sound card in the /etc/asound.conf file.
You can check the sound card numbers for different devices by using the commands aplay -l or cat /proc/asound/cards.
To modify the default sound card, simply change the card number in the /etc/asound.conf file to your desired choice. Additionally, you can select “Force 3.5mm” through the menu by navigating to raspi-config → Advanced Options → Audio.