My guess is that it's a headphone amp with a DAC that takes SPDIF, Toslink and USB inputs and has an apodising filter and selectable upsampling, remote controlled pre and volume, with analog outputs too...

All in one more serious solution for a computer based traditional analog system, cost round 899-999 GB.

Roon/Tidal, SBT, Trinnov ST2 , Twin Devialet D premiers, Vivid Audio Giya G1 Spirits, dedicated and treated room.
Meridian gear: 568.2mm and DSP5000's acting as TV speakers.