Allen & Heath SQ-6 48-Channel Digital Audio Mixer

The Allen & Heath SQ-6 is a 48-channel digital mixing console built around the XCVI FPGA processing core — a hardware architecture that delivers low-latency mixing (around 0.7ms at 96kHz) with per-channel processing including four-band parametric EQ, compressor, gate, and insert points on every input and output. The 24 onboard XCVI preamps are designed for transparent gain staging: they add gain without adding character, which means the sonic signature you shape comes from your EQ and dynamics decisions rather than from preamp coloration bleeding into the signal. The desk runs at 96kHz sample rate on its AES digital outputs, and its 36 mix busses — 12 stereo mix busses plus the main LR — give a seasoned engineer sufficient architecture to build a complete FOH, monitor world, and broadcast split from a single desk without consolidating or compromising.

In practice, the SQ-6 is built for the engineer who regularly works at the upper edge of what a mid-format desk can do: theater shows with complex monitor mixes, club installs where a single desk handles multiple zones simultaneously, and touring mid-size venues where the SLink connection to a remote stagebox eliminates the analog snake entirely. The six-layer fader system with 144 assignable strips means you can organize your entire channel complement — inputs, groups, DCAs, FX returns, and matrix outputs — across logical layers without compromise. The I/O expansion slot for Dante or Waves SoundGrid is the detail that separates the SQ-6 from competitors: it keeps the desk relevant as venue infrastructure and broadcast requirements evolve, without requiring a forklift upgrade.