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Q-SYS QIO-ML4i Network Audio Mic/Line I/O Expander For Q-SYS

Q-SYS QIO-ML4i Network Audio Mic/Line I/O Expander For Q-SYS

SoundPro Item: 132909 | Part Number: QIO-ML4i

Pricing available upon request

Pricing available upon request

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  • Native Q-LAN Integration Keeps Mic Inputs On The Network Without Added Converters
  • Microphone Detection Enables Usage Monitoring And Failure Notifications Per Input
  • PoE Support Simplifies Deployment By Eliminating Separate Power Drops
  • Daisy-Chain Up To Four Units On A Single Network Run To Reduce Switch Ports
  • Drag-And-Drop Q-SYS Designer Integration Streamlines System Configuration
  • Surface And Rack Mounting Options Accommodate Diverse Installation Environments
  • Phantom Power On Mic Inputs Supports Condenser Microphones Without Adapters

The Q-SYS QIO-ML4i is designed for AV integrators and system designers who need to add local mic/line inputs to a Q-SYS network without relocating or replacing core processing hardware. By decoupling I/O from DSP, the QIO series makes it straightforward to scale a Q-SYS system across multiple rooms or zones, placing inputs exactly where signals originate rather than running long analog cable runs back to a central rack.

The QIO-ML4i suits a wide range of installed sound applications, including corporate conferencing, higher education, houses of worship, and hospitality, where microphone connectivity must be distributed and managed centrally. Its Gigabit Q-LAN connection keeps audio on the network fabric already present in modern AV infrastructure, and PoE support simplifies cabling by eliminating the need for a separate power drop at each unit. Up to four expanders can be daisy-chained on a single network run when local DC power is used, reducing switch port consumption in larger deployments.

Integration is handled entirely within Q-SYS Designer Software, using the same drag-and-drop workflow familiar to any Q-SYS-certified designer. Microphone detection on every input enables monitoring, usage statistics, and failure notifications, giving facilities teams visibility that passive breakout solutions cannot provide. The quarter-rack, 1RU form factor supports both surface mounting and rack mounting, keeping deployment options open across furniture, millwork, and equipment rack environments.

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Specifications

Dimensions
Dimensions
8.5 x 4.25 x 1.59 in (215.9 x 108 x 40.4 mm)
Bit Depth
24 bit
Weight
Weight
1.72 lb (0.78 kg)
Electrical
External Power Supply
24 VDC nominal, 2.5 A on Euro connector with second connector for daisy-chaining (QIO-PSU power supply sold separately)
Audio
Sample Rate
48 kHz
Maximum Input Level
+24 dBu
Preamplifier Gain Range
0 dB to 60 dB
Phantom Power
+48 VDC
Input Dynamic Range
@ +24 dBu sensitivity: > 105 dB, @ +10 dBu sensitivity: > 100 dB, @ -10 dBu sensitivity: > 95 dB, @ -36 dBu sensitivity: > 80 dB
Input Impedance
5 kΩ single-ended, 10 kΩ balanced
Equivalent Input Noise
< -120 dBu, no weighting @ 20 Hz to 20 kHz
Input to Input Crosstalk @ 1 kHz
> 85 dB
Connectivity
Mic/Line Inputs
Four (4)
LAN (PoE)
Gigabit LAN connection for Q-LAN, PoE
PoE Specification
Conforms to IEEE 802.3af Type 1
LAN (Thru)
Ethernet daisy-chaining
Environmental
Ambient Operating Temperature Range
0°C to +50°C
Humidity
0% - 85% through 30°C, non-condensing
Storage Temperature
-20° to 70°C
Identifiers
Mounting Options
Surface- and wall-mountable (hardware included); Rack-mountable, 1RU, quarter-rack width (QIO-RMK rack kit sold separately)

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