TUSB213EVM: TUSB213EVM PCB question

I bought TUSB213EVM and tried it on home audio.  Surprisingly, I like the sound from TUSB213.  Potentially it can be used as a cheaper alternative compared to the more complex and expensive audio-grade USB regen + retimer PCIe card, typically called USB reclocker.

I would like to develop a simple USB audio out board using TUSB213 with a dedicated low-noise 5V supply inside music server.

What are the parameters of the TUSB213EVM 4-layer PCB?  

• Copper thickness for each layer
• Prepreg and core thickness

Thanks,
Anwar