The IGS Audio NE72 is a classic circuit based on the legendary British preamp from the 1980s. The NE72 is a full symmetric, transformer-balanced preamp. It is a pure A class circuit with the audio path reduced to minimum (ultra-short connections between elements). The construction consists of two steps of gain. The Gain and Output knobs drive the individual steps. The input is a LL1538 Lundahl transformer. Out's by Carnhill.

Specification:

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

Typical usage:

• Great microphone preamp with or without phantom power
• Good preamp for any other mono instruments
• Handy for vocal and guitar on stage
• Great for high signals like an acoustic snare or kick