Dual HDMI Projector vs Single HDMI Port Projector, What’s the Difference?

By XGIMI Tech - 2025-04

What Are Dual HDMI Projector and Single HDMI Projector?

Most projectors are equipped with at least one HDMI input port for transmitting audio or video. This allows you to easily connect your phone, laptop, game console, soundbars, and more using stable, high-quality connection.

While some projectors are equipped with just one HDMI port (Single HDMI Projector), other models feature two (Dual HDMI Projector). Though the difference may sound small—just one extra port—it can significantly impact how you use your projector daily. Let’s explore what sets them apart and how to choose the best option for your needs.

Dual HDMI vs Single HDMI Input Port Projector

We recommend choosing a smart projector with two HDMI input ports, as it offers more flexibility and quality-guaranteed transmission for both video and audio.

Why Choose a Dual HDMI Projector?

With two HDMI ports, you can easily alternate between multiple supported devices without switching cables while keeping audio and video separate for better reliability.

1. Functional Differentiation: Easier Daily Use and Simplified Wiring

Dual HDMI port projectors usually come with one HDMI-ARC/eARC port and one standard HDMI port.

The standard port is ideal for connecting video sources like game consoles and Blu-ray players, ensuring high-quality video transmission. Meanwhile, the HDMI-ARC/eARC port is designed for connecting audio devices such as soundbars or external speakers, allowing for the direct transmission of lossless audio tracks like Dolby Atmos.

Dual HDMI 4K projectors like the XGIMI AURA 2 and HORIZON S Max both feature two HDMI ports—perfect for home theater setups.

2. Multi-device Compatibility: Connect Multiple Devices Simultaneously and Switch Hassle-Free

With a dual HDMI port projector, you can connect various devices at once. For example, you can use HDMI 1 (ARC/eARC) to connect to a speaker and HDMI 2 to connect to a game console like the PS5. 

This setup allows the projector to display the game visuals from HDMI 2 while sending audio back to the sound system through HDMI 1. Using your remote, you can easily switch between different signal sources without the hassle of plugging and unplugging cables.

3. Bandwidth Allocation: Dual HDMI Design Reduces Signal Interference

When a single HDMI port transmits both high-resolution video and high-quality audio simultaneously (for example, 4K@120Hz video with immersive surround sound in gaming), it can significantly impact bandwidth and stability. A Dual HDMI projector divides these tasks across two separate ports, helping reduce signal interference while ensuring top-notch image and sound quality. 

Can a Projector with a Single HDMI Port Meet Your Needs?

For most everyday uses, a single-HDMI port projector is sufficient. Activities like watching Netflix, connecting to a smartphone, or using it as a Bluetooth speaker work perfectly fine with one port. 

Essential functions like mirroring a laptop screen, playing PS5 games, or streaming movies on an Apple TV can all be handled with a single HDMI 2.0/2.1 connection.

Portable projectors, like the MoGo 3 Pro, prioritize compact design and easy mobility for reliable on-the-go setups without too many ports.

Final Takeaway

Compared to single-HDMI models, dual-HDMI port projectors are better suited for those who want to enjoy simultaneous 4K@120Hz gaming and lossless audio via eARC. Ultimately, a single HDMI projector is an affordable, clutter-free option if mobility and simplicity outweigh the need for using multiple devices at the same time.