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Allen & Heath AH-QU-SB Qu-SB Portable 18-In/14-Out Digital Mixer

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Allen & Heath | SKU: AH-QU-SB

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Designed to accommodate a wide variety of live-sound reinforcement and recording scenarios, the Allen & Heath Qu-SB is an 18-in/14-out rack-mountable, console-less digital mixer that doubles as a 32x32 USB recording interface. Featuring 16 of the company's recallable AnalogiQ microphone preamps, and powered by a 5-core ARM processor, the Qu-SB provides a variety of integrated effects and processing, including channel-independent 4-band parametric EQs, compressors, delay, and reverb.

The mixer is compatible with both the ME Personal Mixing System and dSNAKE digital connectivity system from Allen & Heath, which allows for up to 38 inputs. The Qu-SB is designed to be used with the Qu-Pad app, allowing you to use your iPad to mix from anywhere in the venue when connected to a wireless network.

Features

16 Mic/Line Inputs
16 Recallable AnalogiQ Preamps
12 Mix Outputs
32x32 USB Recording Interface
4 Built-In FX Engines
iPad App for Wireless Mixing
EQ & Dynamics on Each Input and Output
RTA with Peak Band Indicator
Up to 38 Inputs via dSNAKE

Specs

Mixer

Number of Analog Input Channels	16
Mix Routing	4x Stereo FX Return
Groups	4x Mute Group 4x DCA Group
Meter Range	-48 to -3 dBFS Peak/Clip (+19 dBu at XLR Output)
Meter Calibration	0 dB on Meter = -18 dBFS (+4 dBu at XLR Output)

Signal Processing

Gain/Trim Range	Line: ±24 dB (Stereo Channels) Mic/Line: -5 dB to +60 dB (in 1 dB Steps)
Input Polarity	Normal/Reverse
Gate Parameters	Threshold: -72 to +18 dBu Depth: 0 to 60 dB Attack: 50 μs to 300 ms Hold: 10 ms to 5 sec Release: 10 ms to 1 sec
Compressor Parameters	Threshold: -46 to 18 dBu Ratio: 1:1 to ∞:1 Attack: 300 μs to 300 ms Release: 100 ms to 2 sec Knee: Soft / Hard
EQ	FX Returns: 4-Band Parametric
EQ Parameters	1x HF Shelf: ±15 dB at 20 Hz to 20 kHz (Shelf or Bell Selectable) 2x MF Notch/Peak: ±15 dB at 20 Hz to 20 kHz 1x LF Shelf: ±15 dB at 20 Hz to 20 kHz (Shelf or Bell Selectable)
Graphic EQ	28-Band 1/3 Octave, ±12 dB 31 Hz to 16 kHz
Filters	High-Pass: 20 Hz to 20 kHz, 12 dB/Octave
Channel Output/Source Monitoring	AFL, PFL, Post-Preamp, Post-EQ, Post-FX
Built-In Effects	Reverb Delay Reverb (Gated) ADT Chorus Phaser Flanger
Real Time Analyzer	31-Band 1/3 Octave, 20 Hz to 20 kHz
Audio Delay	Adjustable Up to 170 ms

Digital Audio

Sample Rates	48 kHz Stereo Record: 48 kHz Stereo Playback: 44.1 / 48 kHz Multitrack Record: 48 kHz Multitrack Playback: 48 kHz
Bit Depth	AD/DA Conversion: 24-Bit Delta Sigma Stereo Record: 24-Bit Stereo Playback: 16 / 24-Bit Multitrack Record: 24-Bit Multitrack Playback: 24-Bit
Latency	1.2 ms (Mic Input to XLR Output) 0.7 ms (Mic Input to AES Output)

Performance

dBFS Reference Level	+18 dBu = 0 dBFS
Headroom	+18 dB
Frequency Response	20 Hz to 20 kHz +0/-0.5 dB
Max Input Level	Mic Input: +19 dBu Line Input: +29 dBu Aux Input: +22 dBu (+4 dBu) +18 dBu (0 dBu)
Output Level	Aux Output: +22 dBu (2901653168) +4 dBu (2901653169) Line Output: +22 dBu (2901653168) +4 dBu (2901653169)
Analog Dynamic Range	112 dB
I/O Impedance	Aux Input: > 7 Kilohms Aux Output: < 75 Ohms XLR Line Output: < 75 Ohms XLR Mic/Line Input: > 5 Kilohms 1/4" Mic/Line Input: > 10 Kilohms
Noise Floor	-90 dBu (with Inputs Muted)
THD+N	Mic/Line Input: 0.0005% at Unity Gain 0.001% at +30 dB Gain
Signal Generator	Sine, White, Pink, or Band-Pass Noise (Assignable to Any Mix)

Connectivity

Analog Inputs	1x XLR Talkback Input 16x XLR Balanced Mic Input 16x 1/4" TRS Balanced Line Input 2x 1/4" TRS Balanced Aux Input (1 Stereo Pair, Half-Normalled)
Analog Outputs	10x XLR Balanced Mix Output 2x XLR Balanced Main Output 2x 1/4" TRS Balanced Output (1 Stereo Pair)
Digital I/O	1x RJ45 (Network) 1x etherCON dSNAKE (I/O)
USB I/O	1x USB-A (External Memory) 1x USB-B 2.0 (Audio Streaming)

Recording

Max Multitrack Recording

18 Tracks

Power

Input Power	100 to 240 VAC, 50 / 60 Hz
Power Consumption	150 W (Maximum)

Physical

Rackmount Size	4 RU
Operating Temperature	32 to 95°F / 0 to 35°C
Dimensions	17.1 x 6.9 x 6.3" / 435.5 x 174.5 x 161 mm (Desk-Mounted) 19 x 5.3 x 7" / 483 x 135.4 x 177 mm (Rack-Mounted)
Weight	12.7 lb / 5.8 kg

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