I found an interesting case study on the internet. It involves the restoration of a vintage API mixing board that had been originally used in a mixing truck for live audio. The board was totally renovated for J.J. Weisler of Decibelle Recording in San Fransico by Vintage King Audio. Because the board was originally designed for live audio the automation was on the tape monitors and had to be moved to the line monitors. A description of the process can be found at http://www.vintageking.com/API-Legacy-Restored-for-JJ-Wiesler-Sold?sc=14....

It seems like digital recording and mixing is taking over the industry but there is still plenty of room for analog mixers and quality vintage mixers still have a significant following. Projects like this one are one of a kind but fun and rewarding to be a part of.