Anyone knows this IC 3450-0111 ?

I found this IC in a ES-Audio DAC. The German Company no longer exists. I presume the IC is a DAC as it is connected with caps to the tubes.
It is a 10-pins tiny SMD. The bigger chip is a Cirrus, probably a CS8420. I found no digital input receiver.
Very little information can be found of the complete DAC with 5 tubes and a weight of 13kg.
 

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  • Screenshot_2022-10-12 ≥ Buizen DAC ES-Audio — Buizenversterkers — Marktplaats(1).png
    Screenshot_2022-10-12 ≥ Buizen DAC ES-Audio — Buizenversterkers — Marktplaats(1).png
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