TABLE OF CONTENTS
- Supported Audio Format and Quality for Optical In
- How to Use the Line In Port
- How to Use the Optical In Port
- How to Use Audio Input Ports with Multi-room
- How to Select Audio Input
- Edit Input Sources
The WiiM Pro or WiiM Pro Plus feature two distinct audio input ports:
- Line In
- Optical In
You can connect devices like CD players, TVs, PCs, or turntables, to your WiiM Pro or WiiM Pro Plus via these input ports for high-quality playback with reduced latency.
Supported Audio Format and Quality for Optical In
The following table shows the supported audio formats and quality for the Optical In port on both the WiiM Pro and WiiM Pro Plus:
| Device | Ports | Supported Audio Formats | Supported Audio Quality |
|---|---|---|---|
| WiiM Pro | Optical In | Stereo PCM | Up to 24-bit/192 kHz |
| WiiM Pro Plus | Optical In | Stereo PCM | Up to 24-bit/192 kHz |
Please note that neither the WiiM Pro nor the WiiM Pro Plus supports other TV audio formats like Dolby Digital, Dolby Atmos, or DTS.
To ensure proper sound output and compatibility, set the audio format to Stereo PCM in your TV or Blu-ray player's settings when using the WiiM Pro or WiiM Pro Plus.
How to Use the Line In Port
The Line In interface on the WiiM Pro and WiiM Pro Plus is typically used to connect to a CD player or PC to receive analog audio input.
This example shows how to use the Line In port to connect a CD player:
- Use a RCA cable to connect the Line In port on your WiiM Pro or WiiM Pro Plus to the Line Out port on a CD player.
- Select the source input as Line In in the WiiM Home app, or enable Auto-sensing of Line In. For details, see How to Select Audio Input.
- Play music on the CD player. The music will stream to your WiiM Pro or WiiM Pro Plus.
Similarly, you can connect other audio device to your WiiM Pro or WiiM Pro Plus via the Line In port in the same process.
How to Use the Optical In Port
The Optical In port on the WiiM Pro or WiiM Pro Plus is typically used to connect to a TV or PC to receive digital audio input.
This example shows how to use the Optical In port to connect a TV:
- Use an optical cable to connect the Optical In port on your WiiM device to the Optical Out port on a TV.
- Go to the TV settings, set your TV's audio output to select your WiiM Pro or WiiM Pro Plus.
- Set the TV's digital output audio format to the Stereo PCM format. For instructions, refer to General Guide to Setting Digital Audio Output to PCM for Various TV Brands.
- Select the source input as Optical In in the WiiM Home app, or enable Auto-sensing of Optical In. For details, see How to Select Audio Input.
- The audio on the TV will play on your WiiM Pro or WiiM Pro Plus.
Similarly, you can connect other audio device to your WiiM Pro or WiiM Pro Plus via the Optical In port in the same process.
How to Use Audio Input Ports with Multi-room
The WiiM Pro or WiiM Pro Plus supports all its audio inputs—Wi-Fi/Ethernet, Bluetooth, Line In, and Optical In—as sources for your multi-room system. By connecting an audio source device (e.g., a CD player or TV) to your WiiM Pro or WiiM Pro Plus, you can stream audio to any other WiiM devices on the same network.
For detailed instructions, refer to the following articles:
- How to Play WiiM Multi-Room Music from Your CD Player, Turntable, or PC
- How to Stream TV Audio to Multiple Locations using WiiM Multi-room Audio Feature
How to Select Audio Input
Automatically Select Audio Input Using Auto-Sensing
The auto-sensing feature allows your WiiM Pro or WiiM Pro Plus automatically play audio from the connected input when a signal is detected.
To enable auto-sensing, follow these steps:
- Open the WiiM Home App.
- Navigate to the Devices tab.
- Tap the Device Settings icon
of your WiiM device. - Select Audio Input and enable Auto-Sensing of Optical In and Line In.
By enabling auto-sensing, your WiiM device will automatically switch to the active audio input, offering a seamless and convenient listening experience.
Auto-sensing works only when your WiiM device isn't playing audio from the current input source. For example, if your WiiM device is playing music over Wi-Fi and you start audio on Line In or Optical In, it won't automatically switch to that input.
Manually Select Audio Input
You can also manually select the desired audio input on your WiiM Pro or WiiM Pro Plus in the following ways.
- Method 1: From Audio Input in Devices Settings of the WiiM Home App
- Method 2: From the Source Input section in the Browse tab of the WiiM Home App
- Method 3: Pressing the
Button on the WiiM Voice Remote 
Edit Input Sources
To make switching between input sources more convenient, you can manage which sources are visible—keeping your most frequently used inputs easy to access.
For detailed instructions, see Manage Input Sources in the WiiM Home App’s Browse Tab.