QSC QIO-FLEX4A Q-SYS Multi-Purpose I/O Expander

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Available August 2024

The Q-SYS QIO-FLEX4A expands your Q-SYS system’s capabilities to enable streamlined interoperability with non-networked audio and control devices. By separating local I/O from processing hardware, the QIO Series offer modular and easily scalable network I/O to support your desired topology.

  • Native network audio and control connectivity solution for Q-SYS
  • Four (4) software-configurable Flex audio I/O channels
  • 4 x 8 GPIO and one (1) RS232 serial port for integration with third-party control peripherals
  • Two (2) amplifier outputs for compact loudspeakers
  • Power-over-Ethernet (PoE) capable
  • 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, half-rack width)
  • Includes surface mounting hardware
Specificiations QIO-FLEX4A
Connectivity Four (4) Flex I/O, 4x8 GPIO, one (1) RS232, two (2) amplifier outputs
Mic/Line Inputs
Maximum input level 600 Ω, nominal
Preamplifier gain range 300 Hz to 3.3 kHz, ±1.0 dB
Phantom power < 0.5%
Equivalent input noise > 62 dB
Input to input crosstalk @ 1 kHz 0.1
Input impedance 10 kΩ (balanced), 5 kΩ (unbalanced)
Input Dynamic Range @ +24 dBu sensitivity, > 108 dB
@ +10 dBu sensitivity, > 105 dB
@ -10 dBu sensitivity,  > 100 dB
@ -36 dBu sensitivity,  > 80 dB
Mic/Line Outputs
Max output level range -37 dBu to +24 dBu
Output dynamic range 108 dB
Output to output crosstalk @ 1 kHz > 102 dB Typical, > 90 dB Minimum
Output impedance 200 Ω (balanced), 100 Ω (unbalanced)
Sample rate 48 kHz
Bit depth 24 bit
Amp Outputs
Max speaker output power (Aux 24VDC Power) 9 W @ 4 Ω, per channel
Max speaker output power (PoE+) 5 W @ 4 Ω, per channel
Output impedance 4-8 Ω nominal
RS232 1 port
GPIO 4x8
Other Connectors
External power supply 24 VDC nominal, 3.7 A on Euro connector with second connector for daisy-chaining (QIO-PSU power supply sold separately)
LAN (PoE) Gigabit LAN connection for Q-LAN, PoE
PoE specification Conforms to IEEE 802.3at Type 2, Class 4
Accepts IEEE 802.3af Type 1, Class 3 (amplifier disabled at this power level)
LAN (Thru) Ethernet daisy-chaining
Dimensions 5.5 x 8.62 x 1.59 in (139.7 x 219.1 x 40.4 mm)
Weight 2.3 lbs. (1.04 kg)
Mounting options Surface- and wall-mountable (hardware included)
Rack-mountable; 1RU, half-rack width (QIO-RMK rack kit sold separately)
Power consumption Aux 24 VDC Power (@ 9 W per amp channel max), 43.5 W
PoE+ (@ 5 W per amp channel max), 25.5 W
PoE (Amplifier Disabled), 12.95 W
Ambient operating temperature range 0° C to +50° C
Humidity 5% to 85% RH through 30°C, non-condensing
Storage temperature -20°C to +70°C
Heat load 45 BTU/hr
Compliance FCC Part 15B, ICES-003:2020, TUV, CAN/CSA 22.2, IEC62368-1, IEC60065, RoHS2, WEEE, CE, EN55032, EN55035, RCM: AS/NZS CISPR 32, NOM, GB8898, GB13837, GB17625.1, SJ/T 1164 (RoHS), SANS 941, BIS, KC 9032, KC 9035, SASO, RoHS3

At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.

  • Most in-stock orders placed Monday-Friday before 1PM PST ship the same day. Orders placed after 1PM will ship the next day of business. General restrictions apply; please see our full shipping policy here.
  • We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.

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