Focusrite Red 1 500 Series Mic Preamp

The Focusrite Heritage in a new format
Focusrite s Red Range was a direct development of Rupert Neve s designs created for Sir George Martin s AIR studios in 1985. The range rapidly gained legendary status following its release in 1993 and the Red 1 soon became a sought-after mic preamp in the world s top studios, thanks to its ability to get the best from almost any microphone and its unique, signature Focusrite sound.

Maximum Output+25.5dBu (20Hz 20kHz)
Maximum Input>+28dBu (200Hz 13kHz), >26dBu (160Hz-20kHz)
Mic Preamp Input Impedance>1.1k (Nominal)
Frequency Response Deviation at 30dB gain (20Hz 20kHz) 0.1dB
Bandwidth ( 3dB) at 30dB gain103 kHz
Range at 60dB gain ( 0.5dB)125Hz 24kHz
Bandwidth ( 3dB) at 60dB gain32Hz 75kHz
Output Noise (min gain) 104.5dBu CCIR-RMS
107dBu A-wgt
Harmonic Distortion
(30 dB gain, -30 dBu input)Third Harmonic 101dB (0.0009%)
Second Harmonic 88.5dB (0.0038%)
THD+N (20 kHz bandwidth) 88dB (0.0039%)
CMRR (24dB gain, 4dBu input, 1kHz)Common mode test: 102dB
IEC 60268-3:2000 test: 89dB