REALIOS® 9031 Microphone Preamplifier

The Classic Dick Swettenham Olympic Studios Design

All discrete transistor design
20 to 70 dB of gain in 5 dB steps
Great sounding high-impedance DI
Single space 500 series module

Dick Swettenham's three transistor microphone preamp design is truly a thing of beauty. The sound of these microphone preamps is legendary. You've heard it on records made at Olympic Studios in the 60s and 70s. It is now available again in a 500 series module.

This version features a class-A transistor output stage which will drive the most demanding of loads. A vital feature since the original Olympic microphone preamps were integral parts of their respective mixing desks and never meant to be connected directly to an output.

Other additions include finer gain steps (5 dB), a high-impedance FET DI, phase reverse switch, and switchable phantom power.

REALIOS 9031 Features

Meticulously developed, super high quality mic input transformer
Extremely open, high-impedance DI
20 dB pad
Switchable phantom power
Phase reverse switch
Hard bypass

REALIOS 9031 Specifications

Microphone Input Impedance: 1.2 kΩ, balanced
DI Input Input Impedance: greater than 3.3 MΩ, balanced
Output Impedance: less than 50 Ω
Max. Output Level: +32 dBu, transformer balanced
Gain: 20 to 70 dB in 5 dB steps
Frequency Response: +/- 1 dB from 0.15 Hz to 25 kHz
Noise Level: better than 74 dB below +4 dBu, 0-30 kHz