Behringer SD16 I/O Stage Box with 16 Preamps

The Behringer SD16 – I/O Stage Box with 16 Preamps is designed to connect the onstage talent to the Front of House (FOH) console.

Key Features

  • 16x Remote-Controlled Preamps
  • 8x Servo-Balanced XLR Outputs
  • AES50 Networking
  • Ultranet Personal Monitoring Hub

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The Behringer SD16 – I/O Stage Box with 16 Preamps is designed to connect the onstage talent to the Front of House (FOH) console. The stagebox provides 16 remote-controlled Midas-designed preamplifiers as well as eight servo-balanced analog XLR outputs. Two of the programmable inputs are compatible with Hi-Z sources so you can connect keyboards, acoustic, and bass guitars, etc. A USB port is included for fast and easy system updates via your PC.

An integrated 2-port Ultranet distribution hub is included for direct connection to the company’s P16-M personal monitor mixers without the need for any additional hard wire. The compact unit features rugged protective bumpers and the option to be rack mounted using the included rack ears.

A single Cat 5e cable connects the stagebox, and up to three stageboxes can be cascaded together for a total of 48 inputs and 24 balanced outputs. An onboard Ultranet distribution hub provides power and 16 channels of audio to two of the company’s Powerplay P16-M personal monitor mixers.

Remote Controllable Preamps

Includes award-winning Midas-designed microphone preamplifiers with +48V phantom power and destination routing

Servo-Balanced XLR Outputs

Allows you to connect to your amp racks, active loudspeakers, or monitors using Cirrus Logic 24-bit converters


Transmits up to 16 independent channels of 24-bit digital audio and control data via a single Cat 5e cable between compatible digital devices

Klark Teknik AES50

  • 48 bidirectional audio channels over Cat 5e cable (48 kHz)
  • 24 bidirectional audio channels over Cat 5e cable (96 kHz)
  • Single cable duplex interconnection for audio and sample clocks
  • Ethernet physical layer audio data transmission
  • High channel count and low deterministic latency
  • Accurate phase-aligned clock distribution.
  • Comprehensive error detection and management
  • Provision for redundant networking
  • Minimal configuration – total ease of deployment and use
  • Ethernet TCP/IP protocol-compatible auxiliary data channel
  • Royalty-free implementations available as Xilinx FPGA cores
  • OEM modules available from developer partners


A/D and D/A Conversion

24-bit at 44.1/48 kHz, 114 dB dynamic range


1.1 ms



16 (Programmable mic preamps, designed by Midas, balanced XLR/TRS combo)

Line Outputs

8 (balanced XLR)


1x type B port (for system updates)





RJ45 Connector

Ultranet: 4x





<0.005%, A-weighted (20 dB gain, 0 dBu out)

Phantom Power

+48 V, switchable per input

Equivalent Input Noise

-128 dB, A-weighted, XLR (input shorted)


At 20 dB gain (typical): >60 dB
At 40 dB gain: >65 dB


Frequency Range

10 to 22,000 Hz

Dynamic Range

Analog mic in to analog out (typical): 105 dB
A/D Dynamic range, mic preamp to converter (typical): 109 dB
D/A Dynamic range, converter and output: 108 dB


90 dB at 1 kHz, adjacent channels


Mic input XLR jack, unbalanced/balanced: 5 kOhms
Hi-Z input TRS jack, unbalanced/balanced: 1 MOhm
Line input impedance TRS jack, unbalanced/balanced: 20 kOhms

Input Level

Non clip maximum level, TRS: +21 dBu


Output Impedance

50 ohms, XLR, unbalanced/balanced

Output Level

+4 dBu, XLR, nominal/maximum

Residual Noise

XLR: -88 dBu, A-weighted

Digital Audio I/O


AES50 SuperMac networking at 48 or 44.1 kHz, 24-bit PCM: 2x 48 channels, bidirectional
AES50 SuperMac Cable Length: Up to 328' (100 m)
Ultranet networking at 48 or 44.1 kHz, 16-bit PCM: 1x 16 channels, unidirectional
Ultranet Cable Length: up to 246' (75 m)
Ultranet Phantom power for P16-M personal mixers: 2x powered outputs


Power Supply

100 to 240 V (50/60 Hz)

Power Consumption

45 W


Operating Temperature

41 to 104°F (5 to 40°C)


13.1 x 5.9 x 5.5" (333 x 149 x 140 mm)


7.1 lb (3.2 kg)

Packaging Info

Package Weight

9.355 lb

Box Dimensions (LxWxH)

15.4 x 8.3 x 7.8"


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  • Behringer SD16 - I/O Stage Box with 16 Preamps
  • Power Cord
  • Rack Ears
  • Protection Bumpers