My shopping cart
Your cart is currently empty.
Continue ShoppingDon't miss out on exclusive offers, updates, and insider deals. Join our newsletter and unlock a 15% discount off your first purchase.
Allen & Heath QU-SB Mixer
Qu-SB is an ultra-compact digital mixer which frees you to mix from anywhere in the venue and provides a smart, portable solution for performing bands and artists.
Qu-SB is portable enough to carry under one arm and comes loaded with our highly acclaimed suite of FX emulations and dynamics, making it a smart replacement for an old analogue mixer and a rack full of outboard FX.
The companion Qu-Pad app is a slick, intuitive interface for setting up the show and mixing live from your iPad, and there’s also a customisable Qu-Control app that lets you choose just a few essential controls that you really need in front of you for easy access during the show.
Couple these with the Qu-You personal monitoring app for Android / iOS and Qu-SB is a fantastic choice if you’re mixing your own monitors and want to get the same great sound wherever you play.
With all of your settings saved and ready, plus multi-track recording and playback of previous shows for virtual soundchecks, you’ll be all set to play in record time.
On top of the 18 on board inputs and 14 outputs, Qu-SB has you future-proofed with plug n’ play expansion up to 38 inputs / 24 outputs via a family of remote AudioRacks.
QU-SB MIXING APPS
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.
Qu-SB is designed to integrate seamlessly with the fully-featured Qu-Pad iPad app, providing super-fast, easy access to all settings, including channel processing, meters and RTA views, FX racks, scene management, USB audio control, setup menus and much more.
Qu-Pad gives you instant access to all live mixing parameters and frees you to EQ and mix monitors on stage, roam around the venue whilst adjusting the PA, and mix the show from on-stage or the heart of the audience by connecting to the mixer over Wi-Fi More info.
Qu-You allows up to seven performers to control their own monitor mixes using any iOS or Android device, and frees up the engineer to focus on mixing for the audience. More info.
Qu-Control is a customisable iOS app providing a simple interface for non-technical users to control the essential parameters of Qu mixers when technical operators are not around. More info.
Qu Apps require the connection of a Wi-Fi router or access point to the mixer’s Network port.
ANALOGIQ PREAMPS
Qu-SB’s sixteen AnalogiQTM 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 AnalogiQTM 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.
PROFACTORY MIC PRESETS
Allen & Heath has teamed up with leading microphone manufacturers and top engineers at Audio-Technica, Sennheiser, and Shure to provide EQ Library presets for a large number of popular and industry standard microphones. Presets for vocals, electric guitar, acoustic guitar, drums, brass and woodwind have been painstakingly crafted to offer you the best possible starting point for the source and your microphone of choice. Whether you’re a keen amateur or a seasoned professional, you can get to work quickly and easily, saving valuable time so you can concentrate on EQ’ing the source and room acoustics.
ILIVE FX
Qu-SB’s dynamics and FX algorithms are derived from the FX used in the 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 andand external FX units. Qu-SB boasts 4 stereo iLive FX engines, featuring lovingly crafted emulations of legendary classic reverbs, gated reverbs, delays, modulators, flangers and more.
QU-DRIVE
Forget soundcard drivers and software setup, Qu 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. Mixes and FX returns can be recorded alongside channels, and multitrack audio can be played back to the mixer for virtual sound-checks.
An independent set of controls is provided for quick stereo recording of the main LR or other mix outputs, and a 2-track USB return can be routed to ST3 for playback of stereo WAV files such as walk-in music
USB AUDIO STREAMING
Qu’s built-in interface streams multitrack audio to your Mac or PC via a flexible patching system: all Input channels and the Main LR can be recorded at the same time, or you may choose to record something different such as FX returns or a pair of mixes.
The returns from the computer can be assigned to the Input channels. The interface is class-compliant on Mac OS X – and drivers are available for Windows systems. Either way, it will be recognized straightaway by any DAW supporting ASIO or Core Audio, including Logic, Cubase, Reaper, and Pro Tools.
EXPANDABILITY
Qu-SB can be expanded to up to 32 mono inputs via dSNAKE, allowing a convenient Cat5 connection to a combination of remote AB168, AR2412 or AR84 AudioRacks. dSNAKE is our proprietary networking solution, boasting a transport latency of only 105us over cable runs of up to 120m / 390’.
The AudioRacks unleash all the power of Qu-SB, giving you access to extra outputs for Stereo Matrix, Groups, and extra monitor Mixes.
AUTOMATIC MIC MIXER (AMM)
AMM is vital in applications such as conferences, meetings and panel discussions where a number of microphones are open at the same time, reducing background noise and minimising the risk of feedback. The Automatic Microphone Mixer feature helps the engineer to manage the levels of multiple mic inputs, ensuring that each speaker’s contribution is heard. The D-Classic dynamic gain sharing algorithm is inspired by industry standard automixers. Up to 16 microphone sources can be mixed at once, with each channel having a priority setting which determines its ‘weight’ in the total system gain.
QU ECOSYSTEM
Qu provides much more than just a mixer. Qu is an entire ecosystem with Remote AudioRacks allowing I/O to be placed where it’s needed, ME Personal Mixers expanding monitor mixes and enabling simple, time-saving local control, Qu Apps for complete remote setup and wireless mixing on stage or anywhere else in the venue, ProFactory Mic presets to speed up preparation time and ensure the best sound, plus USB recording and DAW integration for powerful workflow optimisation from one centrepiece device.
Mic/Line Inputs | Balanced, XLR and 1/4" TRS jack, fully recallable |
Input Sensitivity (XLR / TRS) | -60 to +5dBu / -50 to +15dBu |
Analogue Gain | -5 to +60dB, 1dB steps |
Maximum Input Level (XLR / TRS) | +19dBu / +29dBu |
Input Impedance (XLR / TRS) | >5k(omega) / >10 k(omega) |
THD+N, Unity gain 0dB | 0.0005% -89 dBu (20-20kHz, Direct Out @0dBu 1kHz) |
THD+N, Mid gain +30dB | 0.001% -83dBu (20-20kHz, Direct Out @0dBu 1kHz) |
ST1, connector | Balanced, 1/4" TRS jack, half normalled |
Input Sensitivity (ST1, ST2 / ST3) | Nominal +4dBu / 0dBu |
Trim | +/-24dB |
Maximum Input Level (ST1,ST2 / ST3) | +22dBu / +18dBu |
Input Impedance | >7k(omega) |
Mix1-10 and LR Out | Balanced, XLR |
Output Impedance | <75(omega) |
Nominal Output | +4dBu = 0dB meter reading |
Maximum Output Level | +22dBu |
Residual Output Noise | -90 dBu (muted, 20-20kHz) |
Mtx 1-2 | Balanced, 1/4" TRS jack |
Source (Alt Output / 2Trk Output) | Patchable / LR post-fade |
Output Impedance | <75(omega) |
Nominal Output | +4dBu = 0dB meter reading |
Maximum Output Level | +22dBu |
Residual Output Noise | -90 dBu (muted, 20-20kHz) |
Inputs | Remote source for CH1-32, ST1, ST2, ST3 |
Outputs | Patchable from Mix1-10, LR, Grp1-8, MTX1-4; Compatible with AudioRacks AR2412, AR84, AB168; 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 |
Control | |
SoftKeys | 10 |
Mute Groups | 4 |
DCA Groups | 4 |
Network | TCP/IP Ethernet for MIDI and iPad app |
Input Processing Source | |
CH1-32 | Local, dSNAKE, or USB |
CH1-32 | Local, dSNAKE, or USB |
ST2, ST3 | dSNAKE, or USB Stereo |
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 FX1-4 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 |
Mix Processing | |
Channel Direct Out to USB | Follow Fader, follow Mute (global options) |
Source select (global) | Post-Preamp, Pre-EQ, Post-EQ, Post-Delay |
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 |
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 |
Maximum Power Consumption | 150W |
Qu-Drive | USB A |
Stereo Record | 2 channel, WAV, 48kHz, 24-bit, patchable |
Stereo Playback | 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) | 32 channel, WAV, 48kHz, 24-bit |
Return (downstream) | 32 channel, WAV, 48kHz, 24-bit |
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 |
Internal FX | 4x RackFX engine, Send>Return or Inserted |
Audio Tools | |
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 |
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/Band-pass Noise |
RTA | 31-Bands 1/3 octave 20-20kHz, follows PAFL source |
Dimensions & Weights (W x D x H) | |
Desk mounted/stagebox use | 435.5 x 174.5 x 161 mm (17.2" x 6.9" x 6.4") |
Rack mounted | 483 x 135.4 x 177 mm (19" x 6.9" x 7") 4U |
Packed in shipping box | 550 x 270 x 270 mm (21.7" x 10.6" x 10.6") |
Unpacked weight | 5.7 kg (12.7 lbs) |
Sign up for our mailing list to receive new product alerts, special offers, and coupon codes.
© 2023 avBYFP | Powered by Shopify