Digital Snake 40CH I/O MODULAR RACK

32 Input + 8 Output Modular Rack

  • REAC

32 Input + 8 Output Modular Rack

This unit has 32 inputs + 8 outputs and is typically installed at stage side. The AD/DA conversion is 24bit/96kHz. High quality XR-1 pre-amps are provided for each input channel, which can accept both mic and line level inputs, eliminating the need for direct boxes. Phantom power and an input PAD is available for each channel.

  • - Modular “stage unit” with 32 inputs and 8 outputs on XLR connectors
  • - High Quality Pre-amps on each input channel. All new, precision-designed XR-1 preamps with massive headroom and clean, warm sound (gain range from -65 to +10 dBu typical, +28 dBu maximum input level)
  • - Audio signal and system status indicators
  • - Two REAC ports (one primary, one redundant)
  • - RS-232C interface for S-4000R Remote Controller or computer control
  • - MUTE ALL OUTPUTS button for noise-free connection of audio sources
  • - Connection port for optional redundant power supply

High Quality Pre-amps on each input channel

In an analog system, low-level microphone signals are boosted using a mic preamp only after the long, arduous journey down the analog snake. For this reason it’s difficult to avoid degradation and cross talk. The S-4000S-3208 is equipped with high quality and remote controllable XR-1 pre-amps that boost the input gain right at the microphone, where the highest quality signal is found. This ensures that your audio will sound its best. And of course once the signal is in digital form, it is immune to analog cabling losses. The XR-1 pre-amp has been specially designed for live audio applications and is made of high quality components carefully selected by Roland’s engineers.

Number of Channels
32 in 8 out
AD Conversion
Sample Rate: 96.0 kHz
Signal Processing: 24 bit
DA Conversion
Sample Rate: 96.0 kHz
Signal Processing: 24 bit
Frequency Response
-2 dB / +0 dB (@ +4 dBu, 20 Hz to 20 kHz)
Total Harmonic Distortion + Noise
0.05 % or less (Pad: On, Input Gain: +4 dBu, 22 to 20000 Hz)
Dynamic Range
110 dB
Cross Talk
-80 dB
Nominal Input Level
-65 to -10 dBu (PAD: Off) -45 to +10 dBu (PAD: On) (1 dB step, Max. +28 dBu)
20 dB On/Off
Input Impedance
20 k ohms
Nominal Output Level
+4 dBu, Max. +22 dBu
Output Impedance
150 ohms
Recommended Load Impedance
10 k ohms or greater
Residual Noise Level (IHF-A, typ.)
-90 dBu
Equivalent Input Noise Level (E.I.N.)
-128 dB
Input: 32 (XLR type, balanced, phantom power, 4 ch input module x 8)
Output: 8 (XLR type, balanced, 4 ch output module x 2)
REAC: MAIN, BACKUP (RJ-45 EtherCon type)
Remote Connector: 1 (RS-232C, DB-9 type)
MIDI Connectors: IN, OUT (5-pin DIN type)
EXT Indicator (External Power Supply Unit)
INT Indicator
REAC Indicator
CTRL Indicator
ALARM Indicator
AC Power Supply
AC 115 V, AC 117 V, AC 220 V, AC 230 V, AC 240 V (50/60 Hz)
DC Power Supply
+24 V (from optional external power supply unit : S-240P)
Power Consumption
130 W
Current Draw (for an optional external power supply unit; Model S-240P)
6 A
Phantom Power
+48 V / 14 mA (each input on SI-AD4, remote controlled)
Operation Temperature
0 to +40 degrees Celsius +32 to +104 degrees Fahrenheit
Power Cord, Adhesive-backed number label sheets, REAC Connector Covers, Ferrite Cores, Owner's Manual
* 0 dBu = 0.775 Vrms

Size and Weight

Width (W)
482 mm19 inches
Depth (D)
336 mm13-1/4 inches
Height (H)
266 mm10-1/2 inches
17 kg37 lbs. 8 oz.

All specifications and appearances are subject to change.


To the top of page