I've designed a custom docking station for the Home Assistant Voice Preview Edition (Voice PE) that incorporates stereo speakers, a compact 3W+3W amplifier, and an inline ground loop isolator for cleaner audio output.
This setup requires moderate soldering experience to handle the audio wiring and power connections properly. In my build, I routed the wiring through the central cavity of the enclosure and positioned the power connector to exit via the rear access panel for a tidy appearance.
A reliable USB-C power supply (at least 5V/2A recommended) is essential for stable operation, and note that the USB-C connector I selected is directional (orientation matters for proper fit).
I've included the STP files here so you can modify the design as needed (e.g., adjust mounting points or cable routing).
Parts list (components I used):

USB-C power connector: https://www.amazon.com.au/dp/B0D59QF95L
Right-angle USB-C cable: https://www.amazon.com.au/dp/B0FJDZH7ND
Inline 3.5mm ground loop isolator: https://www.amazon.com.au/dp/B0FF36TYRJ
Audio amplifier: PAM8403 Digital Audio Amplifier Board (3W+3W)
Speakers: https://www.amazon.com.au/dp/B0DL9SFH49

Important note: The ground loop isolator is necessary because the Voice PE's LED ring generates noticeable electrical noise/interference in the speakers whenever it activates or changes brightness.
The enclosure shown in the photo was 3D printed specifically for the Home Assistant Voice PE — the print files are available on Printables.
This mod significantly improves audio playback quality and volume compared to the built-in speaker while keeping everything compact and self-contained. Let me know if you'd like tips on assembly variations or sourcing alternatives!