Yes.
Elfin Flip 4K is equipped with an HDMI eARC port, allowing connection to an AV receiver for high-quality audio output.
How to Connect via HDMI eARC
1. Use an HDMI cable to connect the projector’s HDMI eARC port (HDMI 1) to the HDMI ARC/eARC port on your AV receiver.
2. Press the Settings button and open Quick Settings, then select All Settings.