QSC QIO-L4o – Q-SYS 4-Channel Line Output Expander

Product Overview

The QSC QIO-L4o is a Q-SYS network line output expander that adds four balanced analog outputs to a Q-SYS system wherever they are needed. As a Q-SYS network audio I/O expander, it lets integrators place amplifier, recording, or assistive-listening feeds at the room edge and carry that audio over a single Ethernet cable as Q-LAN, avoiding long analog runs from the Core. It is natively managed in Q-SYS Designer Software, making it a clean way to scale output capacity in a conference room, boardroom, or multi-purpose room for commercial AV deployment.

Product Description

The QIO-L4o provides four channels of balanced analog line output on a 12-pin Euroblock connector, transporting Q-LAN networked audio from the system processor over standard gigabit Ethernet. Like the rest of the QIO platform, it uses DiffServ QoS, IGMP, and IEEE 1588 (PTPv2) synchronization for an end-to-end system latency of 3.167 ms, including across Layer-3 routed networks. The unit operates on PoE or 24 VDC and provides daisy-chainable power and pass-through Ethernet, so up to four QIO peripherals can share a single switch port when DC power is supplied. A quarter-rack-width, sub-1U chassis includes reversible steel brackets for under-table or on-wall surface mounting, and an optional rack tray fits up to four devices into a 19-inch 1U space. The QIO-L4o pairs naturally with input expanders such as the QIO-ML4i and the mixed-I/O QIO-ML2x2, and mounts with the QIO-RMK rack tray.

Key Features

• Four Balanced Line Outputs — Four analog outputs on a 12-pin Euroblock feed amplifiers, recorders, or assistive-listening systems at the point of use.
• Native Q-SYS Integration — The expander appears in Q-SYS Designer Software for discovery, configuration, control, monitoring, and Q-LAN audio routing.
• Standard Gigabit Ethernet Transport — Q-LAN audio runs on standard network infrastructure with DiffServ QoS, IGMP, and IEEE 1588 PTPv2, at 3.167 ms system latency including Layer-3 routed paths.
• Flexible Power and Daisy-Chaining — PoE or 24 VDC operation with daisy-chainable power and pass-through Ethernet lets up to four units share one switch port.
• Versatile Mounting — A quarter-rack-width, sub-1U chassis includes reversible steel brackets for under-table or on-wall mounting and supports an optional 19-inch rack tray.
• Compact Distributed I/O — The small chassis places outputs near their destination, reducing analog cabling and simplifying AV system integration.

Typical Applications

• Conference room and boardroom amplifier or zone feeds
• Multi-purpose rooms and training rooms
• House of worship recording and assistive-listening outputs
• Government and commercial meeting spaces

Technical Specifications

Frequently Asked Questions

Which Q-SYS Cores does the QIO-L4o work with? The QIO-L4o is a native Q-SYS peripheral managed in Q-SYS Designer Software and operates with current Q-SYS Core processors over a standard gigabit network. Confirm peripheral counts for your Core when planning larger designs.

How is it powered? The unit runs on PoE or 24 VDC, and DC power can be daisy-chained so up to four QIO units share a single access-switch port.

How does it mount? It is quarter-rack-width and under 1U tall, with included reversible steel brackets for under-table or on-wall mounting; an optional rack tray holds up to four units in a 19-inch 1U space.

Can I mix it with QIO input expanders? Yes. The QIO-L4o operates alongside QIO input and mixed-I/O peripherals such as the QIO-ML4i and QIO-ML2x2 within the same Q-SYS design.

What about warranty and support? The QIO-L4o is covered under QSC warranty terms; contact Creation Networks support for Q-SYS design and AV integration assistance.