QSC Attero Tech Axon A4FLEX 4-Channel AES67 Audio Interface with Amplifier
The Axon A4FLEX puts the whole audio end of a small room on one plate: four mic/line inputs, two of which flip to outputs in software, plus USB audio, AES67 networked audio and control, logic I/O, and a built-in two-channel power amplifier. That combination lets a huddle room or small conference room run without a separate DSP frame or a rack amplifier, and the same unit drops into a larger Q-SYS design as a networked I/O endpoint.
Input gain runs from -8 dB to +34 dB in 1 dB steps with software-selectable +48 V phantom per channel, so lavaliers, gooseneck mics and line sources all land on the same device. It speaks AES67, which means it also works with third-party networked audio systems rather than only Q-SYS.
| Connector type | 3.81 mm Euro-block, 3 position (16-28 AWG) |
|---|---|
| Gain | -8 dB to +34 dB gain, 1 dB increments |
| Maximum input level | -8 dB Gain, max input = +16.5 dBu (+24 dBu w/pad) |
| Phantom power | +48 V, software selectable per channel |
| Maximum output levels | +24 dBu (-15.5 dBU w/pad) |
| Dynamic range | 100 dB |
| Dimensions (HWD) | 1.6 x 5.4 x 7.9 in (41 x 137 x 200 mm) |
| Weight | 1.8 lb (0.83 kg) |











