Neve 1272 Schematic

Neve 1272

The is often called the "holy grail" of DIY outboard gear. Originally a line amplifier used in vintage 80-series consoles, it’s famous for being easily "modded" into a standalone 1073-style microphone preamp.

. While it is often discussed as a mic preamp, it was never actually designed as one. Instead, it served as a multi-purpose line and bus amplifier Neve 1272 Schematic

Power and biasing

Critical Insight for Techs:

If you look at a 1073 schematic, you can build a 1272 by simply removing everything before the Line Input transformer (the mic pre gain switch, the 1st LO1160 transformer, and the first two transistors). The 1272 essentially starts at the "Line In" point of the 1073. Neve 1272 The is often called the "holy

• PCBs: BA284 and BA283 cards (or combined modern PCB).
• Transformers: Carnhill VTB9045 (input) and VTB9049 (output).
• Transistors: BC550C (x2), BC560C (x2), BD139 (x1) or ZTX753.
• Capacitors: 470uF 50V (low ESR), 100uF 35V, 220nF film, 100nF ceramic.
• Resistors: 1% metal film – values include 5.6R, 10k, 12k, 47k, 68k, 100R, 330R, 1k5, 10k.
• Power Supply: Any regulated +24V linear supply (e.g., JLM Audio or DIY).

A three-transistor preamp stage where signal enters through a transformer (typically the Output Driver Stage (BA283AM): PCBs: BA284 and BA283 cards (or combined modern PCB)