One of the (many) challenges of the fully balanced design that we want for our 8 stereo inputs and 9 stereo outputs is the integration of fully isolated power regulators within our relatively small enclosure (351 × 268 mm).
After further review, it turns out that each stereo input needs 11 regulators, 7 for the ES9102C analog-to-digital converter, and 2 for each of the 2 input buffers. If we were to use the excellent ADM7150 and design a breakout board for it similar to the Pulsar Power, the smallest we could make it is about 20 × 20 mm, by removing the option of using a custom noise capacitor. Mounted next to each other on top of the audio interface board, the 88 breakout boards would take 220 × 160 mm, which is acceptable.
On the output front, things are a bit easier, since we only need 4 regulators per stereo output, of which we have 9. This will require 36 boards, which would take 180 × 80 mm. Conclusion: we should be able to fit everything, and power dissipation should not be an issue, since the ES9102C consumes less than 200mW, and the ES9018 requires less than 100mW.