The HifiBerry USB prototype is almost finished. Soldering the small TSSOP package of the sound chip is not trivial, but still possible with a good soldering iron, some solder wick and a magnifying glass. Unfortunately, I forgot to order the 12k resistor for the voltage regulator. For the tests, a combination of 10k and 2k in series will do the job.
First measurements look ok, all voltages are good, current drawn without USB connection is 12 mA and the oscillator is working. Therefore I think, that there are no major problems. Without USB connection, the onboard voltage regulator for the analog stage is disabled, therefore I couldn’t test it yet. Stay tuned for more information.