Neve 1272 Schematic Instant

You cannot review the 1272 schematic without acknowledging the transformers. They are not passive components in this design; they are active contributors to the sound.

Key fact from the original 1272 manual: It was designed for +4dBu line levels to drive +26dBu into a 600-ohm load. The circuit can swing nearly 30V peak-to-peak before clipping. Neve 1272 Schematic

Also, note the routing. Neve famously routes phantom power through the center tap of the input transformer. If you wire this wrong, you will fry your input transformer instantly. Don't skip the 100uF blocking capacitors on the input lines. You cannot review the 1272 schematic without acknowledging