IGS Audio: NE72 Transistor Preamp

2 channel transformer balanced preamp. Pure class A design - based on the Neve 1073 preamp

The NE72 is a classic circuit based on the legendary British preamp from the 1980s. As in all IGS Audio devices, the NE72's input is transformer balanced. It is a pure A class circuit with the audio path reduced to minimum (ultra-short connections between elements).

Collections: IGS Audio, Mic-Preamp

Type: Mic Preamplifier

The construction consists of two steps of gain. The Gain and Output knobs drive the individual steps. The input is a LL1538 Lundahl transformer, output is a Carnhill. It is a 2U unit.

Typical usage:

Great microphone preamp with or without phantom power 
Handy for vocal and guitar on stage
Great for high level signals like snare or kick


2 balanced XLR Mic/Line Inputs 
1 unbalanced, high resistance HiZ Inputs on front panel
1 balanced XLR Outputs
+4dB operating level
Maximum Output +29 dBV 
Gain 60dB 
HiZ impedance 1 MOhm 
Output impedance 600 Ohm 
Frequency response 20Hz to 20kHz; +/- 0.3dB 
THD <0.01% @ 1Khz, +20dBu 
Dynamic range 109dB 
Meters read VU 
Internal power supply 
Power consumption 25 Watts
230V/110V Power option 

The NE72 design has been well known and appreciated since the 1980s. This is a preamp that will satisfy all your needs :)

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