32x8 Modular Stage Unit

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The S-4000S-3208 is a component of the S-4000 Digital Snake System. It has 32 inputs, 8 outputs and redundant Ethernet connectors. It is typically used on the stage providing 32 mic/line inputs and 8 outputs or returns. Each channel has remotely switchable Phantom Power as well as a 20 dB pad. The professional quality XR-1 mic preamps are remotely controllable in zipperless 1dB steps using the S-4000R Remote Controller or a Mac or PC using the free RSS-RCS software. The preamps have been designed for live sound applications and provide superb audio quality with 28 dB of headroom.

The redundant Ethernet connectors are rugged Neutrik Ethercon connectors configured as Main and Backup. In case the Main cable is compromised, the system will automatically and seamlessly switch to the Backup cable and light an Indicator LED. In addition to redundant Ethernet connectors and an optional redundant power supply, the unit has a covered power switch to prevent accidental power loss as well as a power cable security bracket. The S-4000S-3208 is rack mountable and provides flush or recessed mounting positions so that a cover can be placed on its rack case while connectors are still in place.

The S-4000S-3208 offers superb remotely controllable mic preamps along with Ethernet and optional power supply redundancy for a high quality, secure system.

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
Size and Weight
482 mm
19 inches
336 mm
13-1/4 inches
266 mm
10-1/2 inches
17 kg
37 lbs. 8 oz.
*The specifications are subject to change without notice.


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