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QSC QIO-ML2x2 – 4-Channel I/O Expander, 2x2 Analog Audio, Q-SYS Ecosystem

QSC QIO-ML2x2 – 4-Channel I/O Expander, 2x2 Analog Audio, Q-SYS Ecosystem - Image 2

QSC QIO-ML2x2 – 4-Channel I/O Expander, 2x2 Analog Audio, Q-SYS Ecosystem - Image 3

QSC QIO-ML2x2 – 4-Channel I/O Expander, 2x2 Analog Audio, Q-SYS Ecosystem - Image 4

QSC QIO-ML2x2 – 4-Channel I/O Expander, 2×2 Analog Audio, Q-SYS Ecosystem

The Q-SYS QIO Series network audio I/O expanders extend your Q-SYS system’s capabilities and enable streamlined interoperability with non-networked audio devices. By separating local I/O from processing hardware.The QIO-ML2x2 features two (2) mic/line inputs and two (2) line outputs.

The QSC QIO-ML2x2 is a versatile audio I/O expander designed to integrate seamlessly with the Q-SYS Ecosystem. It offers 2 mic/line analog inputs and 2 balanced line outputs, providing flexibility for distributed audio systems in commercial AV environments.

Ideal for use in conference rooms, education, hospitality, and retail installations, the QIO-ML2x2 allows local audio sources and endpoints to connect to a centralized Q-SYS Core processor over a standard network. This decentralized approach simplifies system design and reduces cabling complexity.

The expander supports Power over Ethernet (PoE) for easy, single-cable deployment and features LED indicators for system status. Designed to be surface-mounted, it fits into tight spaces such as under tables or behind equipment racks.

The QIO-ML2x2 ensures reliable audio expansion and integration into any Q-SYS network with consistent quality and minimal setup.

Specifications

Specifications	QIO-ML4i	QIO-ML2x2	QIO-L4o
Connectivity	Four (4) mic/line inputs	Two (2) mic/line inputs and two (2) line outputs	Four (4) line outputs
Mic/Line Inputs – Maximum Input Level	+24 dBu	–	–
Mic/Line Inputs – Preamplifier Gain Range	0 dB to 60 dB	–	–
Mic/Line Inputs – Phantom Power	+48 VDC	–	–
Mic/Line Inputs – Equivalent Input Noise	< -120 dBu, no weighting @ 20 Hz to 20 kHz	–	–
Mic/Line Inputs – Input to Input Crosstalk @ 1 kHz	> 85 dB	–	–
Mic/Line Inputs – Input Dynamic Range	@ +24 dBu sensitivity: > 105 dB @ +10 dBu sensitivity: > 100 dB @ -10 dBu sensitivity: > 95 dB @ -36 dBu sensitivity: > 80 dB	–	–
Mic/Line Inputs – Input Impedance	5 kΩ single-ended, 10 kΩ balanced	–	–
Line Outputs – Output Audio Range Level	–	–36 dBu to +24 dBu	–36 dBu to +24 dBu
Line Outputs – Output Dynamic Range	–	108 dB	108 dB
Line Outputs – Output to Output Crosstalk @ 1 kHz	–	> 85 dB	> 85 dB
Line Outputs – Output Impedance	–	150 Ω to 300 Ω	150 Ω to 300 Ω
Sample Rate	48 kHz	48 kHz	48 kHz
Bit Depth	24 bit	24 bit	24 bit
Other Connectors – External Power Supply	24 VDC nominal, 2.5 A on Euro connector; daisy-chain supported (QIO-PSU sold separately)	Same	Same
Other Connectors – LAN (PoE)	Gigabit LAN connection for Q-LAN, PoE	Same	Same
Other Connectors – PoE Specification	IEEE 802.3af Type 1	Same	Same
Other Connectors – LAN (Thru)	Ethernet daisy-chaining	Same	Same
General – Dimensions	8.5 × 4.25 × 1.59 in (215.9 × 108 × 40.4 mm)	Same	Same
General – Weight	1.72 lb (0.78 kg)	Same	Same
General – Mounting Options	Surface- & wall-mountable (hardware included); Rack-mountable, 1RU, quarter-rack width (QIO-RMK kit sold separately)	Same	Same
Environmental – Ambient Operating Temp	0°C to +50°C	Same	Same
Environmental – Humidity	0%–85% through 30°C, non-condensing	Same	Same
Environmental – Storage Temp	-20°C to +70°C	Same	Same
Compliance	FCC 47 CFR Part 15, IC ICES-003, CE (EN55032, EN55035), EU RoHS 2011/65/EU, WEEE 2012/19/EU, China RoHS GB/T26572, EAC, UL, C-UL, NOM-019	Same	Same

Features

Native network audio I/O solution for Q-SYS
QIO-ML4i: Four (4) mic/line inputs
QIO-L4o: Four (4) line outputs
QIO-ML2x2: Two (2) mic/line inputs and two (2) line outputs
Professional, high performance mic/line level inputs (with +48 VDC phantom power) and/or line outputs
Microphone detection on inputs to enable monitoring, usage statistics and failure notifications
Power over Ethernet (PoE) capable or daisy-chain up to four QIO expanders on a single network run (with local daisy-chained DC power
Simple drag-and-drop integration and comprehensive management via Q-SYS Designer Software and Q-SYS Reflect
Surface- or rack-mountable (1RU, quarter width)
Includes surface mounting hardware

Professional mic/line connectivity where you need it: QIO Series network audio I/O expanders allows you to provide your Q-SYS system with greater flexibility to deploy mic/line audio connectivity where it’s most convenient. The network audio I/O expanders feature professional mic/line level inputs with +48 VDC phantom power and/ or line outputs to ensure high-performance and compatibility, along with microphone detection on inputs to enable monitoring, usage statistics and failure notifications. Additionally, each of the three models features a compact form factor that can be rack- or surface-mounted.
Expanded I/O customization: QIO Series is intended to present a simpler way to add network I/O connectivity to Q-SYS systems, decoupling the physical location of the I/O from processing hardware to support distributed or centralized processing architectures. Additionally, QIO Series lets you customize your I/O configuration, and compliments the strengths of newer Q-SYS Core models that were designed with fewer onboard I/O options (Core Nano, Core 8 Flex, or NV-32-H (Core Capable)).

Graphic showcasing daisy-chained QIO Series devices over an office space

Simplicity & scalability: Daisy-chain up to four of the QIO Series devices on a single network run (with local daisy-chained DC power) to consume fewer network ports, avoid rack clutter, and allow for quicker future expansion without pulling additional network cables. Alternatively, QIO Series are also PoE-capable, providing simple single cable connectivity (when devices aren’t daisy-chained).
Designed for Q-SYS: The QIO Series deliver native network I/O customization to Q-SYS, a cloud-manageable audio, video and control platform, built to deliver scalable, flexible AV solutions into the future. Learn more about Q-SYS.