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Introduction
Enable new Digital Snake possibilities by merging up to four REAC devices
The S-4000M REAC Merge Unit allows up to four Digital Snake heads to be merged into a REAC stream where the master device recognizes it as single REAC slave unit. This important technology enables distribution of multiple input/output units around a location, venue or stage for flexible point-to-point digital snake or V-Mixing System configurations.
Product Highlights:
- Merge up to 4 REAC devices into a single REAC stream
- Power REAC devices supporting embedded power
- Assign channels automatically with auto map function
- Patch input and output assignments using PC software or the M-400 / M-380 V-Mixer
- Automatically assign input channels using the Auto Map feature

Main Features
Merge up to four REAC devices together.
The S-4000M merges up to four Digital Snake heads, such as the S-0808, S-1608 and S-4000, and merges the input/ouput to a single REAC signal. Ports 1 to 4 supply REAC embedded power to compatible product such a s the S-0808. The intelligent Auto Map function assigns input channels automatically. REAC master devices recognize the S-4000M as a single REAC slave unit even when multiple digital snake heads are connected.
Distribute outputs to multiple devices.
The S-4000M also serves as a distributor of outputs and/or splitter. Any inputs returning from Port 1 (Master) are distributed to the outputs depending on the devices connected. When S-0808 sare connected, specific output assignments can be set.
Configure Routing from a PC or V-Mixer.
The M-400 / M-380 V-Mixer or dedicated PC Remote Control Software (S-4000RCS) configures routing, input gain, PAD and phantom power.

Specifications
| S-4000M Specifications | |
| Connectors | REAC (RJ-45 EtherCon type) x 1 REAC EMBEDDED POWER (RJ-45 EtherCon type) x 4 REMOTE (RS-232C, DB-9 type) x 1 |
| Indicators | REAC EMBEDDED POWER: Red x 4 LINK: Green x 5 POWER: Blue x 1 AUTO MAP SLAVE UNITS: Red x 1 |
| Switches | POWER x 1, MODE x 1, AUTO MAP SLAVE UNITS x 1 |
| Power Supply | AC 115 V, AC 117 V, AC 220 V, AC 230 V, AC 240 V (50/60 Hz) |
| Power Consumption | 1.6A / AC 115 V / AC 117V 0.9A / AC 220 V / AC 230 V / 240 V (At max output of REAC EMBEDDED POWER) |
| Dimensions | 218.0 (W) x 356.3 (D) x 86.5 (H) mm, 8-5/8(W) x 14-1/16(D) x 3-7/16(H) inches |
| Weight | 3.0 kg, 6 lbs 10 oz |
| Accessories (Included) | Power Cord x 1, REAC Connector Cover x 5, Ferrite Core x 5, Rubber Foot x 4 Fastening Screw x 4, Owner's Manual x 1 |
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In the interest of product improvement, the specifications and/or appearance of this unit are subject to change without prior notice. |
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Optional Accessories
Note: S-4000M accessories listed are not available through Roland Systems Group and are provided for informational purposes only. Please contact respective manufacture for details.
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Example Configurations
Easily distribute multiple I/O units for more flexible system configurations.

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This system allows I/O to be placed in 4 separate locations using S-0808s. The signals from the 4 units are merged by the S-4000M as it travels to the S-4000H breakout location. Power to each of the S-0808s is supplied by the embedded power over REAC in the S-4000M.
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This system enables a variety of digital snakes to be used in an installation where many inputs or outputs may be required around a venue. Using the routing ability within the S-4000M, assign or patch to any input - all controlled via the V-Mixer.
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