The board works just fine, but when the computer goes to sleep and then wakes up, there is no signal out. But I found that this only happens on the spdif outputs. The I2S output seems to work.
I would give it five stars if it wasn't for this.
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This module now based on CM6631A interface allows you to obtain a qualitative digital output from a computer source.
Natively supported by all operating systems on the market (some functionnalities remain limited on Linux so far), its implementation is particularly simple.

| Specifications | |
|---|---|
| Interface USB to S/PDIF | Cmedia 6631A | 
| Version | 1.3 | 
| USB connector | Female USB Type B | 
| I2S output | Needs to be welded on the PCB | 
| Coaxial SPDIF | RCA | 
| USB | High-Speed mode asynchrone | 
| sampling rate supported | 16/24-bit and 8/16/32 / 44.1 / 48/96/192 kHz | 
| Digital output | Digital coaxial, optical or I2S | 
| Dimensions : | 55 x 61.5 x 25 mm | 
| distances | 53.3 x 47.15mm | 
| Input | USB | 
| Output | Optical Toslink | 
| Output | I2S | 
| Output | Coaxial SPDIF | 
| Max sampling rate | 192kHz | 
| Interface chip | CM6631A | 
| Average votes  4.2 / 5  11 reviews | Why write products reviews ?  You can share your feelings about products and help other people by sharing your experience | 
Henrik E.
volker d.
marc m.
Jean Marie F.
Alexandr C.