Allen & Heath SQ-6

24 Onboard Preamps / 12 Stereo Mixes + LR

Allen & Heath

Product Highlights

  • 96kHz FPGA Processing
  • Expandable to 48 Input Channels
  • 24 Onboard Preamps
  • 12 Stereo Mixes + LR
Rentex No. AHSQ6DM48

SQ-6 is built for professionals in demanding live sound, recording and streaming applications. Delivering class-leading high-resolution audio with an ultra-low <0.7ms latency, the SQ-6 gives you unrivalled power and audio fidelity.

Allen & Heath SQ - Part One: Overview w/ Keith Johnson

Mic/Line Inputs Balanced XLR, fully recallable
Input Sensitivity -60 to +0dBu
Switchable Pad -20dB
Analogue Gain 0dB to +60dB, 1dB steps
Maximum Input Level +30dBu
Input Impedance >5kΩ
THD+N, Unity gain 0dB 0.002% -92dBu (20Hz-20kHz, AES Direct Out, @0dBu 1kHz)
THD+N, Mid gain +30dB 0.003% -91dBu (20Hz-20kHz, AES Direct Out, @-30dBu INPUT 1kHz)
Phantom Power +48V (+3V / -2V)
Stereo Line Inputs  
ST1, ST2 connectors Balanced, 1/4″ TRS jack
ST3 connector Unbalanced, stereo 3.5mm Mini Jack
Input Sensitivity (ST1, ST2 / ST3) Nominal +4dBu ST1, ST2 / 0dBu ST3
Trim +/-24dB Maximum
Input Level (ST1,ST2 / ST3) +22dBu / +18dBu
Input Impedance >7kΩ
XLR Outputs Balanced, XLR
Outputs A and B Balanced 1/4″ TRS Jack
Source Patchable
Output Impedance
Nominal Output +4dBu = 0dB meter reading
Maximum Output Level +22dBu
Residual Output Noise -90dBu (muted, 20Hz-20kHz)
AES Digital Output Balanced XLR 2 channel, 96kHz sampling rate (Default with SRC Bypassed) Switchable output sample rates,44.1kHz/ 48kHz/ 88.2kHz/ (96kHz) 2.5Vpp balanced terminated 110G
Connection Neutrik EtherCON (RJ45)
dsnake mode (48kHz devices) 40 input 20+40(ME) output channels
dx mode (96kHz devices)  32 input 32 output channels
gigaACE/GX (96kHz devices) 128 input 128 output channels
Inputs Fully Patchable
Outputs Fully Patchable
Sync/SRC Assignable as master audio sync for all modes, SRC 64 channel
I/O Port Multi-channel I/O option module
Inputs Fully Patchable
Outputs Fully Patchable
Sync/SRC Assignable as master audio sync
System Measured balanced XLR in to XLR out, 0dB gain, 0dBu input
Dynamic Range 112 dB
Frequency Response +0/-0.5dB 20Hz to 20kHz
Headroom +18dB
Internal operating Level 0dBu
THD+N, Mic/Line routed to Main L/R Out Unity gain faders@0dB, 0.006%, -84dBu (20 – 20kHz)
dBFS Alignment +18dBu = 0dBFS (+22dBu at XLR output)
Meter Calibration 0dB meter = -18dBFS (+4dBu at XLR out)
Main Meter Type 2 x 12 segment, fast (peak) response
Channel Meter Type Chromatic Channel Metering, fully programmable colour/brightness
Peak Indication -3dBFS (+19dBu at XLR out), multi-point sensing
Sampling Rate 96kHz
Bit Depth Uses XCVI core custom bit widths in algorithms, up to 96bits
Latency <0.7mS, Local Mic Input to Main L/R
Operating Temperature Range 0 deg C to 40 deg C (32 deg F to 104 deg F)
Mains Power 100-240V AC, 50/60Hz
Max Power Consumption SQ-6 90W
SQ-6 Width x Depth x Height & Weights
Desk mounted 638 x 514.9 x 198 mm (25.1″ x 20.3″ x 7.8″)
Packed in shipping box 820 x 680 x 360 mm (32.3″ x 26.8″ x 14.2″)
Unpacked weight 14.5 kg (32 lbs)
Packed weight 17.3 kg (38.1 lbs)


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