… removing the four footers then bottom cover revealed these innards:

Fronting Pascal's heat sink were 36 Tesla coils as some of the elements not present in the outgoing U-300.

The PCM DAC is based on…

…the Burr Brown PCM 1794 and the absence of standard coaxial RCA in favor of superior BNC connectors show Aavik's seriousness about transfer quality.

Likewise for the high-speed connectors on the flying leads between boards.