Item #: ALL QU24 LIST

Allen & Heath QU24 24 Channel Compact Digital Mixer

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Product Highlights

Product Description

With its 25 motor faders, responsive touchscreen and acclaimed AnalogiQTM recallable preamps, the Allen and Heath QU24 24 Channel Digital Mixer combines exceptional ease of use with class-leading audio performance. Drawing on the technologies and workflow pioneered on our GLD and iLive touring systems, Qu makes Allen & Heath digital mixing more accessible and more compact than ever.

Allen and Heath QU24 24 Channel Digital Mixer Features:

  • 24 XLR/TRS mic/line mono inputs with AnaLogic preamps
  • 3 stereo inputs
  • 4 Band parametric EQ , compressor, gate HPF and phantom power on all inputs
  • 4 band parametric EQ, compressor, 1/3 Octave Graphic EQ on all outputs
  • 20XLR outputs
  • AES Digital Output
  • Onboard QUdrive 18 track Multi-track recording
  • USB 2.0 Streaming interface for recording to DAW
  • DAW Midi control via USB or TCP/IP with HUI control
  • Hi-Resolution full color touch screen
  • Integral iPad Shelf/bracket
  • Built in Lamp Socket
  • 4 simultaneous effects racks each with stereo returns
  • 100mm motorized "total recall" faders
  • Dedicated Talk Back Mic input
  • Dsnake remote audio Port for Digital snake connectivity with AH AR racks
  • Compatible with A&H ME-1 Personal Monitor Mixer
  • Controllable via iPAD with QU pad app (free download)
  • 4 Mute Groups, 2 Stereo Subgroups, 2, Stereo Matrix
  • 10 User Soft Keys
  • 20 Mix outputs each with Comp, 4 Band Parametric EQ, Graphic EQ and Delay
  • 4 MUTE GROUPS, 2 Stereo Subgroups, 2, Stereo Matrix
Analogiq(TM) Preamps
Qu-24’s twenty four AnalogiQ(TM) total recall preamps feature zero crossing detection and an advanced padless 1dB step gain stage, closely allied to the DSP for optimal gain accuracy and audio transparency. The analogue signal is captured by high class, low latency 24bit analogue to digital converters matched to high quality 24bit digital to analogue converters to deliver the required outputs. The AnalogiQ(TM) design has been refined over many months to offer superb transparency, minimal distortion and an ultra-low noise floor, with a warm, musical sound that is missing from some digital consoles.

    QU Firmware Version 1.6 Update!
    • Expanded Channel and effects Libraries with 56 factory presets for EQ, Compression, ETC
    • New Status Logging for the Qu Drive recorder
    • Latching Talkback Mic Option New Option for PAFL to follow Mix (great for the monitor guys!)
    • And….QU-YOU!
    • Click here to QU Firmware V1.6 New Features (PDF)
    • Up to 7 of the QU-Apps can run and one instance of QU-PAD as well as unlimited ME-1 making this the most powerful all-in-one ecosystem available on the market! Very powerful !
    • The App is available on the Apple store today for FREE!
The Mixing Experience
Having massive processing power and advanced functionality is great, but it counts for nothing if you can’t access the controls you need in a heartbeat. Once you start using Qu-24 you’ll sense the years of research into ergonomics and the hands-on mixing experience that our team has drawn upon to deliver a wonderfully natural layout and workflow. It’s not about recreating an analogue interface, it’s about creating an experience that’s fluid, comfortable and intuitive for novices, digital natives and old school road warriors alike, making all the benefits of digital mixing technology readily accessible to all.

Touch Control
The 800 x 480, sixteen million colour Touchscreen and its dedicated data encoder form the heart of the Qu interface, providing super-fast, easy access to all settings. The user-friendly interface has been designed with clarity in mind. Dedicated keys and screen tabs quickly guide you to meter and RTA views, FX racks, channel processing, USB audio control, scenes, setup menus and much more.

The Superstrip
All your key processing tools are presented in a clean layout on the SuperStrip, with 1 function per physical control. The SuperStrip is complemented by an onscreen Touch Channel for intuitive access to full processing parameters without clutter or complex menu structures. Processing for Mono and Stereo inputs includes trim, polarity, HPF, gate, insert, 4 band PEQ, compressor and delay. The main LR and the Mono mixes have controls for Insert, 1/3 octave GEQ, compressor and delay. The Stereo mixes provide Insert, 4-band PEQ, compressor, delay and balance control.

Fader Automation
Moving faders started as an expensive option in the studio desks of the 80s, and later became the norm with the advent of digital technology. Nevertheless some entry-level digital mixers lack this precious commodity which is a fundamental part of the Total Recall approach. Fader automation is essential for rapid mixing, especially when you’re dealing with multiple monitor mixes – just press a mix key and the faders immediately fly to the send levels for that mix. Qu-24 features 25 motorized ALPS faders, 24 arranged over 2 layers, allowing instant access to all channels and masters in a compact space, plus a dedicated master fader which dynamically follows the mix selection. A third, Custom layer is available for ad-hoc user strip layout, where any combination of Inputs, FX Sends, FX Returns and Mix masters can be assigned.

Ilive FX
Qu-24’s dynamics and FX algorithms are derived from the FX used in our iLive pro touring series. Some of the world’s most respected audio engineers have chosen to use iLive’s FX on tour in preference to top-end plug-ins and external FX units. Qu-24 boasts 4 stereo iLive FX engines, featuring lovingly crafted emulations of legendary classic reverbs, gated reverbs, delays, modulators, flangers and more. The FX library has the ability to grow with future firmware releases. FX are returned to the mix on dedicated return channels, so you’re not tying up your mono and stereo input channels. Each Stereo FX Return has a dedicated 4 band PEQ. Find out more about FX and processing for Qu.

Total Recall
True digital mixing is about being able to save and recall scenes (snapshots) at the press of a button. Qu-24 can store up to 100 full Scenes for recall at will. Channels and mixes can be made Safe from Scene recall. For example, if an instrument or mic gets swapped out after the soundcheck, the channel can be made safe to avoid settings being overridden by Scene recalls. Or if a broadcast feed or walk-in iPod is added last-minute before the show kicks off, that mix or channel can be made safe from any scene change. In addition, single parameter updates can be blocked using per scene Recall Filters or a Global Recall Filter. So if you tweak the graphic EQ to reflect the room response when the audience gets in, you can block this to prevent any overwriting at scene change. Custom settings for each EQ, compressor, channel or FX can be saved as Library presets. This lets you store your tried and tested SM58 EQ or reverb pattern and apply it to other channels or shows. Libraries, Scenes and the complete Show configuration can be saved to a USB key, so you can carry the show with you, ready to use on another Qu mixer.

USB Audio Streaming
Qu-24’s built-in interface streams multitrack audio to your Mac: all mono channels, the Main LR mix and 3 selectable stereo pairs. The returns from the Mac can be assigned to the Mono channels plus stereo. The interface is class-compliant on Mac OS X – which means it’s truly plug ‘n play, with no need to install a driver. It will be recognized straightaway by any DAW supporting Core Audio, including Logic, Cubase, Reaper, and Pro Tools. Standard MIDI control is tunnelled over the USB connection so you can easily map the faders to the tracks of your favourite DAW. Alternatively, a MIDI driver is available for use with the Ethernet port.

Forget soundcard drivers and software setup, Qu-24 has an integrated multitrack USB recorder, providing 18 channels of 48kHz 24bit recording and playback straight to / from your USB hard drive. Capturing multitrack recordings of your shows has never been so easy. A selectable stereo pair can be recorded alongside 16 Mono channels, and multitrack audio can be played back to 16 Mono channels plus ST1. On top of this, Qu-Drive also provides stereo recording, patchable from any pair of Mix outputs, the Main LR (pre, post, or summed to mono) or even the PAFL bus, with 2- track stereo playback to ST3.

Armed to the Hilt
Qu-24 is equipped with 5 cores of high efficiency ARM core processing, with dedicated ARM cores running the touchscreen display and surface, USB streaming, Qu-Drive multi-channel USB recording / playback, Ethernet and fader automation. Between them the ARM cores provide state-of-the-art processing, working in parallel to deliver extensive control, instant-on operation, and lightning-fast response. The mixer’s DSP farm exploits next generation dual core DSPs. With plenty of DSP power under the hood the channel processing is only using a fraction of capacity, so Qu-24 is future-proofed, with ample room for updates and extra functionality. The Qu DSP architecture employs varied bit depths, tailored to specific algorithms, with 48 bits on critical EQ functions and a 56 bit accumulator on the mix bus where it really counts, allowing every nuance of the audio to be captured in the final mix.

The Shape of Things To Come
Made from 18 gauge, cold-rolled Zintec steel, Qu-24’s distinctive frame is designed for strength and rigidity. We’ve done unspeakable things to that chassis in the lab and it’s taken everything we’ve thrown at it – even being stomped on by our resident ex-tank commander. Silence is a precious commodity in the live or studio environment, which is why nobody wants those moments of stillness ruined by the whirring of fans coming from the mix position. Qu’s sleek profile generates optimal airflow through the mixer, eliminating the need for any fans.

Add the Qu-Pad iPad app to your Qu setup and you’re free to adjust the monitors on stage, roam around the venue whilst tweaking the PA, and then mix the show from the heart of the audience. Qu-Pad connects to the mixer over Wi-Fi and gives instant access to all live mixing parameters and settings. Qu-Pad requires the connection of a Wi-Fi router or access point to the Qu-24 Network port.

ME Personal Mixing System
Qu-24 is fully compatible with our ME Personal Mixing System. Any number of ME-1 personal mixers can be chained from the dSNAKE(TM) port (or from an AR2412 Stagebox if you’ve got one connected to the dSNAKE(TM) port). Each performer can be given tailored control over their own mix, leaving the engineer free to focus on the audience experience. Find out more at

Qu-24 is a self-contained mixer, so if you’ve already got the analogue cables you’re good to go. If you’re thinking of trading in the copper multicore for a Cat5 digital snake, Qu-24’s dSNAKE(TM) port has you future-proofed, allowing connection to a remote AR2412 or AR84 Stagebox. dSNAKE(TM) is our proprietary networking solution, boasting a transport latency of only 105us over cable runs of up to 120m / 390’. So if you’re mixing FoH you can place your I/O on the stage and run a single Cat5 cable back to the Qu-24 in the mix position.

Qu-24 packs 10 SoftKeys for more user-assignable functions such as Mute Groups, Tap Tempo, Scene navigation or PAFL Clear.

4 Groups
Groups 1-4 are typically used as subgroups to LR for level masters and/or processing, for example to compress a drum kit or to tame multiple lavalier microphones with a single graphic equalizer.

The Matrix
Qu-24’s Matrix adds 2 further stereo outputs equipped with full processing to the console’s extensive I/O. It is a ‘mixer within a mixer,’ fed from any combination of Group 1-4, Mix 1-10, and main LR. It can be used to provide a broadcast feed, a recording mix, or duplicate the main outputs for delay stacks and fill / zone speakers where independent GEQ and delay is applied.
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Phone:  800-431-2609 Warranty:  1 Year

Product Specifications

- Inputs:
- Mic/Line Inputs 1-16 (Qu-16) 1-24 (Qu-24): Balanced, XLR and 1/4" TRS jack, fully recallable
- Input Sensitivity (XLR / TRS): -60 to +10dBu / -50 to +20dBu
- Analogue Gain: -10 to +60dB, 1dB steps
- Maximum Input Level (XLR / TRS): +19dBu / +29dBu
- Input Impedance (XLR / TRS): >5kOhms / >10 kOhms
- THD+N, Unity gain 0dB 0: 0.0005% -89 dBu (20-20kHz, Direct Out @0dBu 1kHz)
- THD+N, Mid gain +30dB: 0.001% -83dBu (20-20kHz, Direct Out @0dBu 1kHz)
- Stereo Line Inputs:
- ST1, ST2 connector: Balanced, 1/4" TRS jack, half normalled
- ST3 connector: Unbalanced, 3.5mm Mini Jack
- Input Sensitivity (ST1, ST2 / ST3): Nominal +4dBu / 0dBu
- Trim: +/-24dB
- Maximum Input Level (ST1,ST2 / ST3): +22dBu / +18dBu
- Input Impedance: >7kOhms
- Outputs:
- Mix1-10 and LR Out, Grp1-4, MTX1-4 (Qu-24 only): Balanced, XLR
- Output Impedance: <75Ohms
- Nominal Output: +4dBu = 0dB meter reading
- Maximum Output Level: +22dBu
- Residual Output Noise: -91 dBu (muted, 20-20kHz)
- Stereo Alt Out & 2Trk Out: Balanced, 1/4" TRS jack
- Source (Alt Output / 2Trk Output): Patchable / LR post-fade
- Output Impedance: <75Ohms
- Nominal Output: +4dBu = 0dB meter reading
- Maximum Output Level: +22dBu
- Residual Output Noise: -91 dBu (muted, 20-20kHz)
- Stereo Alt Out & 2Trk Out: Balanced, 1/4" TRS jack
- Source (Alt Output / 2Trk Output): Patchable / LR post-fade
- Output Impedance: <75Ohms
- Nominal Output: +4dBu = 0dB meter reading
- Maximum Output Level: +22dBu
- Residual Output Noise: -90 dBu (muted, 20-20kHz)
- AES Digital Output: 2 channel, 48kHz sampling rate, XLR. 2.5Vpp balanced terminated 110Ohms
- Inputs: Remote source for CH1-24, ST1, ST2, ST3
- Outputs: Remote outputs for Mix1-10, LR. Compatible with AudioRacks AR2412, AR84. Compatible with ME personal mixing system
- 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
- dBFS Alignment: +18dBu = 0dBFS (+22dBu at XLR output)
- Meter Calibration: 0dB meter = -18dBFS (+4dBu at XLR out)
- Meter Peak indication: -3dBFS (+19dBu at XLR out), multi-point sensing
- Meter Signal indication: -48dBFS (-26dBu at XLR out)
- Meter Type: Fast (peak) response
- Sampling Rate: 48kHz +/-100PPM
- ADC, DAC: 24-bit Delta-Sigma
- Latency: 1.2 ms (local XLR in to XLR out). 0.7 ms (local XLR in to AES out)
- Operating Temperature Range: 0 deg C to 35 deg C (32 deg F to 95 deg F)
- Mains Power: 100-240V AC, 50/60Hz, 82W max (Qu-16), 120W (Qu-24)
- USB Audio:
- Qu-Drive: USB A
- Device: Use a USB hard drive (not a USB key)
- Stereo Record: 2 channel, WAV, 48kHz, 24-bit, patchable
- Stereo Playback: 2 channel, WAV, 44.1 or 48kHz, 16 or 24-bit, to ST3
- Multitrack Record: 18 channel, WAV, 48kHz, 24-bit, patchable
- Multitrack Playback: 18 channel, WAV, 48kHz, 24-bit
- USB Audio Streaming: USB B, Core Audio compliant
- Send (upstream) Qu-16/Qu-24: 24/32 channel, WAV, 48kHz, 24-bit
- Return (downstream) Qu-16/Qu-24:22/30 channel, WAV, 48kHz, 24-bit
- Dimensions (W x D x H):
- Dimensions, desk mounted (W x D x H): 632 x 500 x 186 mm, (24.9 x 19.7 x 7.4 in.)
- Dimensions, rack mounted (W x D x H): 670 x 790 x 350 mm, (26.4 x 31.1 x 13.8 in.)
- Weight: 22 lbs., (10 kg)
- Controls:
- Faders: 100mm motorised
- Touch Screen: 5" TFT, 800x480 resolution
- SoftKeys: 4 (Qu-16), 10 (Qu-24)
- Mute Groups: 4
- Network: TCP/IP Ethernet for MIDI and iPad app
- Input Processing:
- CH1-16 (Qu-16), CH1-24 (Qu-24): Local, dSNAKE, or USB
- ST1, ST2: Local, dSNAKE, or USB
- ST3: Local, dSNAKE, or USB
- USB Global Source: Qu-Drive or USB B Streaming
- Stereo Linking: Odd/even input pairs
- Parameters linked: EQ, dynamics, insert, delay, assignments, sends
- Link options: Preamp, polarity, sidechains, fader/mute, pan
- Polarity: Normal/Reverse
- High Pass Filter: 12dB/octave 20Hz – 2kHz
- Insert: Assign FX into Input channels
- Delay: Up to 85ms
- Gate: Self key Sidechain
- Threshold / Depth: -72dBu to +18dBu / 0 to 60dB
- Attack / Hold / Release: 50us to 300ms / 10ms to 5s / 10ms to 1s
- PEQ: 4-Band fully parametric, 20-20kHz, +/-15dB
- Band 1: Selectable LF Shelving (Baxandall), Bell
- Band 2, Band 3: Bell
- Band 4: Selectable HF Shelving (Baxandall), Bell
- Bell Width: Non-constant Q, variable, 1.5 to 1/9th octave
- Compressor: Self key Sidechain
- Threshold / Ratio: -46dBu to 18dBu / 1:1 to infinity
- Attack / Release: 300us – 300ms / 100ms - 2s
- Knee: Soft/Hard
- Types: Peak Manual, RMS Manual, SlowOpto, PunchBag
- Channel Direct Out to USB: Follow Fader, follow Mute (global options)
- Source select (global): Post-Preamp, Pre-EQ, Post-EQ, Post-Delay
- Mix Processing:
- Insert: Assign FX into Mix channels
- Delay: Up to 170ms
- GEQ: Constant 1/3 oct, 28 bands 31Hz-16kHz, +/-12dB Gain
- PEQ: 4-Band fully parametric, 20-20kHz, +/-15dB
- Band 1: Selectable LF Shelving (Baxandall), Bell
- Band 2, Band 3: Bell
- Band 4: Selectable HF Shelving (Baxandall), Bell
- Bell Width: Non-constant Q, variable, 1.5 to 1/9th octave
- Compressor: Self key Sidechain
- Threshold / Ratio: -46dBu to 18dBu / 1:1 to infinity
- Attack / Release: 300us – 300ms / 100ms - 2s
- Knee: Soft/Hard
- Types: Peak Manual, RMS Manual, SlowOpto, PunchBag
- FX:
- Internal FX: 4x RackFX engine, Send>Return or Inserted
- Types: Reverbs, Delays, Gated Reverb, ADT, Chorus, Symphonic Chorus, Phaser, Flanger
- 4 dedicated Stereo FX returns: Fader, Pan, Mute, Routing to Mix/LR, 4-Band PEQ
- Audio Tools:
- PAFL: PFL or stereo in-place AFL, 0 to -24dB Trim, 85ms Delay
- Talkback: Assignable to any mix, 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
- Qu-24 Mixer: Width x Depth x Height
- Desk mounted: 632 x 500 x 186 mm (24.9" x 19.7" x 7.4")
- Packed in shipping box: 670 x 790 x 350 mm (26.4" x 31.1" x 13.8")
- Unpacked weight: 14 kg (31 lbs)
- Packed weight: 18 kg (40 lbs)

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