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Typically, users stream Apple Music from their iPhone to a WiiM device via AirPlay or Bluetooth. However, these methods do not support bit-perfect high-resolution audio. This tutorial will guide you through a bit-perfect method for streaming Apple Music from your iPhone to a WiiM device, ensuring the best audio quality while fully utilizing WiiM’s DSP features. 

Before You Begin


Ensure you have the following items ready:

  • An iPhone with USB-C

  • Apple Music app installed on the iPhone

  • A WiiM device with an optical input (e.g., WiiM Ultra, WiiM Amp, WiiM Amp Pro, WiiM Pro, WiiM Pro Plus) is successfully set up.

  • An USB-C-to-Optical adapter as below
  • An optical cable

  • Connect the iPhone and WiiM device to the same Wi-Fi network.

  • Optionally, a Mac with macOS 15 or higher, featuring Apple Silicon or an Apple T2 Security chip（for remote control). 

Step-by-Step Instructions


1. Connect the iPhone with the WiiM Device


Connect the iPhone and the WiiM device to the USB-C-to-Optical adapter, and connect the adapter to a power source, as shown in the diagram below:


2. Enable Hi-Res Lossless Audio on the iPhone 


  1. Go to Settings > Music > Audio Quality.

  2. Toggle on Lossless Audio, then set Hi-Res Lossless.


3. Play Music on Apple Music


Open the Apple Music app on the iPhone and play music. 


4. Select the WiiM Device's Source Input in WiiM Home App


Open the WiiM Home app and select Optical In as the source input.


Now, the Hi-Res audio will play on your WiiM device. 


You can further enhance your audio using WiiM's DSP features in the WiiM Home app. For details, refer to Optimizing Your Audio Experience: A Comprehensive Guide to Room Correction and How to Use Per-Source EQ: A Comprehensive Guide.

Control Apple Music on iPhone from Your Mac via iPhone Mirroring (Optional)


You can easily control Apple Music on your iPhone from your Mac using iPhone mirroring. This method is particularly useful if you prefer managing music playback on a larger screen or want a more convenient control setup. For detailed instructions, refer to iPhone Mirroring: Use your iPhone from your Mac.

A special thanks to forum user EddNog for sharing his helpful tips and insights, which helped shape this tutorial. Your contribution is greatly appreciated!