Many WiiM users ask why they don't get 24-bit/192kHz but 16-bit/44.1kHz from their streaming service while listening on WiiM Mini or Pro. Here is the list of audio resolutions some popular music services offer. Since WiiM Mini or Pro uses the bit-perfect output to achieve the best possible audio quality. Thus, the bit-depth/sample rate resolution at the "Now Playing" UI on WiiM Home App is the same for music source and output.


The WiiM Mini or Pro won't perform upsampling or resampling to the fixed sample rate/bit depth output like other music streamers since the resampling process will degrade the output audio quality.


A bit depth of 16 bits and a sample rate of 44.1 kHz lossless audio is also called CD-quality. The lossless audio with higher bit depth and sample rate is called Hi-Res audio. Music services like Amazon Music, TIDAL, and Qobuz support Hi-Res audio streaming.    


Bit depth/sample rate pair from some popular music services

Music Service 

Subscription Tier

Minimal bit-depth/sample rate

Maximal bit-depth/sample rate

AirPlay 

Chromecast

Spotify

Spotify Free/Premium

16-bit/44.1 kHz

Same

Fixed to 16-bit/44.1 kHz

16-bit/44.1 kHz

Amazon Music

Amazon Prime Music

16-bit/44.1 kHz

Same

Fixed to 16-bit/44.1 kHz

16-bit/44.1 kHz 

Amazon Music Unlimited - HD

16-bit/44.1 kHz

Same

Fixed to 16-bit/44.1 kHz

16-bit/44.1 kHz

Amazon Music Unlimited – Ultra HD

24-bit/44.1 kHz

24-bit/192kHz

Fixed to 16-bit/44.1 kHz

16-bit/44.1 kHz

TIDAL

HiFi

16-bit/44.1 kHz

Same

Fixed to 16-bit/44.1 kHz

Use TIDAL Connect

HiFi Plus (Master)

24-bit/44.1 kHz

FLAC: 24-bit/48 kHz

MQA core decoder: 24-bit/96 kHz

MQA with external render: 24-bit/192 kHz or higher

Fixed to 16-bit/44.1 kHz

Use TIDAL Connect (up to 24-bit/96 kHz)

Qobuz

Studio/Sublime

16-bit/44.1 kHz

24-bit/192 kHz

Fixed to 16-bit/44.1 kHz

Up to 24-bit/96 kHz

Deezer

Premium/HiFi

16-bit/44.1 kHz

Same

Fixed to 16-bit/44.1 kHz

16-bit/44.1 kHz



As seen on the WiiM Home App