Bit-perfect playback ensures that the audio signal is transmitted from the source to your output device without any modifications, maintaining the original quality of the sound. This article will guide you on how to configure your WiiM device for bit-perfect playback.


Bit-Perfect Playback Overview


Bit-perfect playback delivers audio exactly as it was recorded, preserving its original quality. It avoids resampling, digital volume adjustment, and DSP effects (e.g. EQ), ensuring the audio bypasses system mixers and remains unaltered.


This is essential for high-resolution formats like FLAC or WAV and offers benefits such as:

  • Highest Audio Fidelity: Experience music exactly as it was recorded, with every detail intact.

  • Critical Listening: Ideal for audiophiles and professionals requiring accurate sound reproduction.

  • Optimized for High-Resolution Audio: Formats like 24-bit/192 kHz PCM and DSD demand pristine data paths to realize their full potential.


By ensuring a pure and unaltered audio signal, bit-perfect playback unlocks the true capabilities of high-resolution audio formats and enhances your listening experience.


Set Up Bit-Perfect Playback


Before You Begin


  • Ensure that your WiiM device is running the latest firmware.

  • Ensure that the WiiM Home app is updated to the latest version.


Step 1. Disable EQ


If the EQ setting is enabled, follow these steps to disable it:

  1. Open the WiiM Home app on your mobile device.

  2. Go to the Devices tab and tap the Device Settings iconof your WiiM device.

  3. Select EQ and then toggle off the EQ setting.


Step 2. Configure Audio Settings


  1. Open the WiiM Home app on your mobile device.

  2. Go to the Devices tab and tap the Device Settings iconof your WiiM device.

  3. Select Audio Settings.

  4. Make the following settings:
  • Enable Fixed Volume Output.
  • Keep Volume Limit to its default setting (100%).
  • If audio is output via SPDIF or Coax, set SPDIF/Coax Output Resolution to 192 kHz/24-bit and disable Fixed Resolution to avoid resampling.
  • Keep Volume Balance at its default setting (0).
  • Disable Fade-In & Fade-Out Effects.


Step 3. Configure Audio Input Settings


  1. Open the WiiM Home app on your mobile device.

  2. Go to the Devices tab and tap the Device Settings iconof your WiiM device.

  3. Select Audio Input.

  4. Make the following settings:
  • Select your audio input source.
  • Keep Pre-Gain of your audio input source at its default setting (0 db).
  • If audio is input via Optical or HDMI ARC, disable Optical/HDMI Audio De-noising.
  • Disable Per-Source Volume Control.


Step 4. Disable Volume Normalization on Streaming Services


For bit-perfect playback from streaming services such as TIDAL, Qobuz, or Plex, ensure that volume normalization is disabled.


For volume normalization settings on TIDAL, Qobuz, and Plex,  refer to How to Use Replay Gain for TIDAL, Plex, and Qobuz via the WiiM Home App.


By following these steps, you can configure your WiiM device for bit-perfect playback and enjoy audio in its purest form.