I've read or heard a long time ago that Experts have 40bit to work with. I am not so sure about 384kHz. Maybe dual-mono upsamples to 384, but I think a stereo amp is 192kHz. I asked Devialet support about this several years ago (2015) and they said this:
"Dear Sir,
Thank you for your patience.
As you understand, a Devialet 400 is composed of two units of Devialet 200.
The Devialet 200 can upsample to 192kHz. So with a 400 (2x 200) you get a signal up sampled to 2x 192, meaning 384khz.
So, 384kHz over-sampling is not used in 120 or 200, but it is possible with Devialet 400 and 800."
I guess this indicates that at least the 440 and 1000 can upsample to 384kHz.
"Dear Sir,
Thank you for your patience.
As you understand, a Devialet 400 is composed of two units of Devialet 200.
The Devialet 200 can upsample to 192kHz. So with a 400 (2x 200) you get a signal up sampled to 2x 192, meaning 384khz.
So, 384kHz over-sampling is not used in 120 or 200, but it is possible with Devialet 400 and 800."
I guess this indicates that at least the 440 and 1000 can upsample to 384kHz.
*
Devialetless!
Roon, ROCK/Audiolense XO/Music on NAS/EtherRegen/RoPieee/USPCB/ISORegen/USPCB/Sound Devices USBPre2/Tannoy GOLD 8
250 Pro CI, MicroRendu(1.4), Mutec MC-3+USB
Devialetless!
Roon, ROCK/Audiolense XO/Music on NAS/EtherRegen/RoPieee/USPCB/ISORegen/USPCB/Sound Devices USBPre2/Tannoy GOLD 8
250 Pro CI, MicroRendu(1.4), Mutec MC-3+USB