Topic: Windows 10 PC + Toslink bit-perfect test shows only 16bits passed
ADI-2 Pro FS Black Edition
I'm experimenting with Toslink output in my Windows PC based on Asus ROG XI Hero motherboard, with Realtek (HD Audio CODEC S1220) sound-card. Toslink is able to output up to 192/24 on this mobo.
Now, there are two problems:
- official Realtek drivers (even the latest ones) make some apps (Tidal, Audirvana), that can engage "exclusive mode" for this sound card, randomly drop sound, optical output and exclusive mode is unavailable after problem occurs
- generic Microsoft "HD Audio Drivers" that come with Windows 10 work well and are 100% stable, I can see "lock" and/or "sync" in ADI-2 info page up to 192/24, but always getting only "16-bit bit-perfect test passed" message, even for 24/32 bits test recordings; however Tidal works very well with optical, autoswitching frequencies. Eventhough ADI-2 shows e.g. 96/24 for Tidal, I'm suspecting playback is 16bits only, as bit-perfect test files are telling me?
Anybody knows how to solve this?
Are generic Windows drivers doing downsample do 16 bits?
Are there working Realtek drivers that do not randomly fail and could solve this issue?
USB connection and ASIO via Audirvana is fine, able to go up to 192/32 without any problems, and bit-perfect test files show this. But I would prefer to use Optical connection, as Tidal and RME WASAPI USB drivers cannot autoswitch frequency, while Toslink can.