Tech Spec
Supported Sample Rates
44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz
Simultaneous inputs & outputs
58 x 64 (not including 2 x virtual loopback inputs in Thunderbolt Mode)
Eight channels of analogue-to-digital conversion
2 High impedance instrument inputs
4 Red Evolution mic preamps
8 line inputs (D-Sub)
Fourteen channels of digital-to-analogue conversion
2 main monitor outputs (TRS)
8 line outputs (D-Sub)
2 stereo headphone outputs
Eighteen channels of digital I/O
16 channels of ADAT I/O via optical connector supports SMUX and SMUXII for operation up to 192 kHz
2 channels of S/PDIF I/O
Dante expansion
32 input channels
32 output channels
Compatible via Dante Virtual Soundcard (Not Included)
Advanced Mode allows audio routing of any 3rd party Dante device to and from the Red 4Pre anywhere on your network
Auto-routing mode not currently implemented
Connectivity
Dual Thunderbolt™ 2 ports (2m Thunderbolt Cable included in the box)
Dual Digilink for connecting to Pro Tools | HD
Microphone Preamps
4 Red Evolution Mic Preamps
‘AIR’ Mode
+48V Phantom Power
Switchable HPF
Phase Reverse
Stereo linking
All features controllable from front panel of Red 4Pre and from within Focusrite Control
Microphone Inputs
|
Connector Type |
XLR Female, pin 2 positive |
|
Phantom Power |
+48V Phantom Power, Switchable per mic input |
|
Frequency Response |
20 Hz – 35 kHz +/-0.2 dB |
|
Signal to Noise Ratio |
118 dB (A-weighted) |
|
Dynamic Range |
118 dB (A-weighted) |
|
THD+N |
0.0009% |
|
Noise EIN |
–129 dBu (A-Weighted) |
|
Maximum input level |
+19 dBu |
|
Gain Range |
0-63dB (1dB increments from 8dB) |
|
Common mode rejection ratio |
>70dB at 997 Hz Min Gain |
|
Input impedance with AIR mode OFF |
6kΩ |
|
Input impedance with AIR mode ON |
2kΩ |
Line Inputs 1-4
|
Connector Type |
DB25 Female connector balanced |
|
Frequency Response |
20 Hz – 35 kHz +/-0.2 dB |
|
Signal to Noise Ratio |
118 dB (A-weighted) |
|
Dynamic Range |
118 dB (A-weighted) |
|
THD+N |
0.0009% |
|
Maximum input level |
+27dBu |
|
Gain Range |
0-63dB (1dB increments from 8dB) |
|
Common Mode Rejection Ratio |
>70dB at 997 Hz Min Gain |
|
Input impedance with AIR mode OFF |
10kΩ |
|
Input impedance with AIR mode ON |
10kΩ |
Line Inputs 5-8
|
Connector Type |
DB25 Female connector balanced |
|
Frequency Response |
20 Hz – 35 kHz +/-0.2 dB |
|
Signal to Noise Ratio |
118 dB (A-weighted) |
|
Dynamic Range |
118 dB (A-weighted) |
|
THD+N |
0.0007% |
|
Maximum input level |
+26dBu |
|
Gain Range |
N/A (Fixed Gain) |
|
Reference Level |
N/A |
|
Common Mode Rejection Ratio |
>70dB at 997 Hz Min Gain |
|
Input impedance with AIR mode OFF |
20kΩ |
|
Input impedance with AIR mode ON |
20kΩ |
Instrument Inputs
|
Connector Type |
1/4″ Female TS Unbalanced |
|
Frequency Response |
20 Hz – 35 kHz +/-0.2 dB |
|
Signal to Noise Ratio |
117dB (A-Weighted) |
|
Dynamic Range |
117dB (A-Weighted) |
|
THD+N |
0.0015% |
|
Maximum input level |
+15dBu |
|
Gain Range |
0-63dB (1dB increments from 8dB) |
|
Input impedance with AIR mode OFF |
Nominal input impedance = 2M3 |
|
Input impedance with AIR mode ON |
Nominal input impedance = 2M3 |
Monitor Outputs
|
Connector Type |
1/4″ Female TRS Balanced |
|
Frequency Response |
20 Hz – 35 kHz +/-0.25 dB |
|
Signal to Noise Ratio |
+120dB (A-Weighted) |
|
Dynamic Range |
+120dB (A-Weighted) |
|
Maximum Output Level (0 dBFS) |
+18dBu |
|
THD+N |
0.006% |
|
Stereo Level Balance |
0.02dB@ 997Hz |
|
Output impedance |
Nominal output impedance = 136R balanced (68R each phase) |
Line Outputs 3-10
|
Connector Type |
DB25 Female connector balanced |
|
Frequency Response |
20 Hz – 35 kHz +/-0.25 dB |
|
Signal to Noise Ratio |
+121dB (A-Weighted) |
|
Dynamic Range (Line Outputs) |
+121dB (A-Weighted) |
|
Maximum Output Level (0 dBFS) |
+18dBu |
|
THD+N |
0.0009% |
|
Stereo Level Balance |
0.02dB @ 997Hz |
|
Output impedance |
Nominal output impedance = 136R balanced (68R each phase) |
Headphone Outputs
|
Connector Type |
1/4″ Female TRS Stereo |
|
Signal to Noise Ratio |
115dB (A-Weighted) @ 270R |
|
Dynamic Range |
115dB (A-Weighted) @ 270R |
|
THD+N |
0.01% @ 270R |
|
Maximum Output Level |
+16dBu @ 270R |
|
Max Output Power |
80mW (+19dBm) @ 270R |
|
Output Impedance |
10Ω |
Digital I/O
|
Synchronisation Sources |
Internal, ADAT, S/PDIF, Word Clock, Loop Sync, Dante |
S/PDIF
|
Connector Type |
Coaxial RCA |
|
Supported Sample Rates |
44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz |
ADAT
|
Connector Type |
Optical TOSLINK |
|
Format |
ADAT Digital Lightpipe with S/MUX |
|
Supported Sample Rates |
44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz |
Channel Assignments @ 44.1 kHz, 48 kHz Port 1 = Channels 1 – 8, Port 2 = 9 – 16
Channel Assignments @ 88.2 kHz, 96 kHz Port 1 = Channels 1 – 4, Port 2 = 5 – 8
Channel Assignments @ 176.4 kHz, 192 kHz Port 1 = Channels 1 – 2 , Port 2 = Channels 3 – 4
Word Clock
|
Connector Type |
BNC |
|
Word Clock input termination |
75 Ohms |
Electrical
|
AC Input Connector Type |
Male IEC |
|
AC Requirements |
100 – 240V AC, 50 – 60 Hz |
|
Max Power Consumption |
35W |
Mechanical
1U Rack Mountable
Weights and Dimensions of unboxed unit
|
Weight (without accessories) |
4.59 kg |
|
Height |
44 mm |
|
Width |
483 mm |
|
Depth (length) |
340 mm |
Weights and Dimensions of boxed unit
|
Weight |
6.4 kg |
|
Height |
110 mm |
|
Width |
600 mm |
|
Depth (length) |
465 mm |
Package Contents
Focusrite Red 4Pre Audio Interface
2m Thunderbolt Cable
Getting Started Guide
IEC Power Cable