The Open-Box Allen & Heath SQ-6 Mixer is a 48-channel digital mixing console designed for professional live sound, recording, and installation applications. This mixer boasts a 96kHz FPGA processing engine, delivering high-resolution audio with ultra-low latency for exceptional sound quality. It features 24 onboard preamps, 8 stereo FX engines, and 16 assignable soft keys for flexible control. The SQ-6 also offers a 7-inch capacitive touchscreen for intuitive navigation, along with motorized faders for seamless mixing. With a robust metal chassis and comprehensive I/O options, including USB multitrack recording, this open-box unit provides the full power and reliability of the SQ-6 at a more accessible price point.
• 96kHz FPGA processing
• 48 Input Channels
• DEEP Processing ready
• 17 Faders / 6 Layers
• 12 Stereo mixes + LR
• 3 Stereo Matrix
• 8 Stereo FX Engines + dedicated returns
• 7” capacitive touchscreen
• SLink port for remote audio / expansion
• 64ch I/O Port for audio networking
• 32×32 USB audio interface
• SQ-Drive direct recording to USB
• AES output
• Chromatic channel metering
• Integrated LED illumination
• Dedicated physical controls
• 8 Assignable SoftKeys
• Channel LCD displays
• 19” rack mountable
Input Sensitivity: -60 to +0dBu
Switchable Pad: -20dB
Analogue Gain: 0dB to +60dB, 1dB steps
Maximum Input Level: +30dBu
Input Impedance: >5kO
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)
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: >7kO
Outputs A and B: Balanced 1/4" TRS Jack
Source: Patchable
Output Impedance: <75O
Nominal Output: +4dBu = 0dB meter reading
Maximum Output Level: +22dBu
Residual Output Noise: -90dBu (muted, 20Hz-20kHz)
dSnake mode (48kHz devices) 64 channels assignable, compatible with AR2412, AR84, AB168, ME
dx mode (96kHz devices) 32 channels assignable, compatible with DX168
gigaACE (96kHz devices) 128 channels assignable, compatible with dLive and SQ
I/O Port Inputs: Fully Patchable
I/O Port Outputs: Fully Patchable
I/O Port Sync/SRC: assignable as master audio sync for all modes, SRC 64 channel
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 routed to Main L/R. (Direct, No EQ/ Effects)
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-5/SQ-6 75W / 90W
CH1-48 Fully patchable
USB Global Source: SQ-Drive or USB-B Streaming
Polarity: Normal/Invert
Trim: -24 to +24dB
High Pass Filter: 12dB/octave 20Hz – 2kHz
Insert (Pre EQ/Comp): Fully Patchable
Delay: Up to 341ms
Gate: Patchable Sidechain
Sidechain filter: Hi-pass (20-5k), Band-pass (120-10k), Lo-pass (120-20k)
Threshold / Depth -72dBu to +18dBu / 0 to 60dB
Attack / Hold / Release 50µs to 300ms / 10ms to 5s / 10ms to 1s
PEQ 4-Band fully parametric, 20-20kHz, +/-15dB
Band 1, Band 4: Selectable Shelving (Baxandall), Bell
Band 2, Band 3: Bell
Bell Width: Variable Q, 1.5 to 1/9th octave
Compressor: Patchable Sidechain
Sidechain filter: Hi-pass (20-5k), band-pass (120-10k), Lo-pass (120-20k), Q=1
Threshold / Ratio: -46dBu to 18dBu / 1:1 to infinity
Attack / Release: 30µs to 300ms / 50ms to 2s
Knee: Soft/Hard
Detector response: Peak/RMS switchable
Parallel Path Compression dry/wet -inf to 0dB
Channel Direct Out: Follow Fader, Mute, Mute Group, DCA (global all ch)
Source select: Post-Preamp, Post-HPF, Post-Gate, Insert Return, Post-PEQ, Post-Comp, Post-Delay trim -inf to 10dB per channel
Insert (Pre EQ/Comp): Fully Patchable
Delay: Up to 682ms
GEQ: 28 bands 31Hz-16kHz, +/-12dB Gain, Constant 1/3 oct
PEQ As Input PEQ
Compressor As Input Compressor
Internal FX: 8 x RackExtra FX engine, Send>Return or Inserted (4 dedicated FX bus)
Types: SMR Reverb, Gated Reverb, Stereo Tap Delay, ADT, Symphonic
8 dedicated Stereo FX returns Fader, Pan, Mute, Routing to Mix/LR, 4-Band PEQ
PAFL PFL or stereo in-place AFL, 0 to -24dB Trim, PAFL Delay Up to 682ms
Talkback Dedicated input, Assignable to any mix, Gain, Pad, 48V, 12dB/oct HPF
Signal Generator Assignable to any mix, Sine/White/Pink/Bandpass Noise
RTA 31-Bands 1/3 octave 20-20kHz, follows PAFL source
SQ-Drive: USB A
Stereo Record: 2 channel, WAV, 96kHz, 24-bit, source fully patchable
Stereo Playback 1/2 channel, WAV, 44.1, 48, 96kHz 16, 24-bit, fully patchable
Multitrack Record: 16 channel, WAV, 96kHz, 24-bit, track sources fully patchable
Multitrack Playback: 16 channel, WAV, 96kHz, 24-bit fully patchable
USB Audio Streaming: USB B, Core Audio compliant, ASIO/WDM for Windows
Send (upstream) 32 channel, 96kHz, 24-bit
Return (downstream) 32 channel, 96kHz, 24-bit
Desk mounted: 638 W x 514.9 D x 198 H mm (25.1" x 20.3" x 7.8")
Packed in shipping box: 820 W x 680 D x 360 H mm (32.3" x 26.8" x 14.2")
Unpacked weight: 13.3 kg (29.3 lbs)
Packed weight: 17.3 kg (38.1 lbs)
(1) Allen & Heath SQ-6 Mixer