| Feature | Neve 1073 Schematic | Neve 1272 Schematic | | :--- | :--- | :--- | | | Marinair LO1166 (Mic/Line) | Line input only (or 1:1) | | Gain Structure | Rotary switch with multiple feedback taps | Fixed gain or pot (variable) | | Output Transformer | Same (LO2567) | Same (LO2567 or 31267) | | Preamp Stages | Three gain stages + EQ amp | Two gain stages + output driver | | Typical Use | Microphone + EQ | Line driver / DIY mic pre |

Transformers are crucial in Neve designs. They serve two purposes:

To turn a stock 1272 (line amp) into a mic preamp, you need to add a :

Disclaimer: Always use proper safety precautions when working with 24V DC supplies and high-voltage audio signals. Original Neve schematics are copyrighted; this article provides educational analysis only.