Loyola Enterprises

A veteran and minority owned SDB Certified Business.

Allen & Heath

Allen & Heath WZ3 20S

757.498.6118 Ext - 109WZ3 20S - Call for pricing - Desk/Rack Mount Stereo Source Console


PDFSmall Format Live Sound Mixers Brochure (pdf)

PDFWZ3 20S User Guide (pdf)

The Allen & Heath WZ20S was a truly ‘customer-led’ project. They were getting a lot of emails and calls from small broadcast outfits, keyboard fanatics and hire companies who had lots of stereo sources to mix, but couldn’t find a good quality console that could do the job without costing an absolute fortune. They couldn’t resist a challenge like that, so a few months later, WZ20S was born. As well as accommodating an incredible 40 inputs to 2 independent mixes, this Wizard can be tailored for the job with a host of options like fader-start and turntable inputs.

Now upgraded to WZ3 status, the 20S remains a favorite mixer for small broadcast studios, internet radio stations, project studios and stereo sub-mixing anywhere. Featuring the new WZ3 preamp and responsive EQ, the WZ3 20S provides 12 channels with no fewer than 4 mono and 18 stereo sources.

On the WZ3 20S, 8 dual stereo input channels are provided, each with TRS jack ‘A’ and XLR ‘B’ inputs. These may be mixed together into the channel or mode switched to provide up to 16 independent sources to the mix—ideal for multi-stereo keyboard and recording applications.


  • 4 mic/line mono inputs
  • 8 dual stereo input channels
  • 2 stereo returns
  • Responsive 4-band EQ
  • 6 auxiliary sends
  • Internal option to configure auxes
  • Dedicated mono output fader
  • Stereo AB output
  • Sys-Link 2 output option
  • 100mm faders
  • User wiring options

Operating Levels
Channels 0 dBu Headroom +21 dB
Mix -2 dBu Headroom +23 dB
Main Outputs +4 dBu Headroom +22 dB
Maximum Output (XLR/Jack) +26 dBu / +21 dBu
Mic Pre-Amp Sensitivity -60 to +10 dBu
Stereo Input Sensitivity -16 to +20 dBu
Frequency Response (±0.5dB) 20 Hz–50 kHz
THD + Noise @ 1 kHz < 0.004%
Common Mode Rejection
Mic Input +40dB gain > 80 dB
Mic Input with Pad 0dB gain > 50 dB
Crosstalk @ 1 kHz
Adjacent Channel > 90 dB
Mute Shutoff > 100 dB
Fader Shutoff > 90 dB
Noise Performance (22Hz–22kHz unweighted)
Mic EIN with 150Ω source -128 dB
Residual Output Noise < -95 dBu (-99 dB S/N)
Main Mix Noise < -83 dBu (-87 dB S/N)
Connection Impedances
Mic Inputs 2 kΩ
Line Inputs > 10 kΩ
Outputs < 75 Ω
Max. Boost/Cut (each band) ± 15 dB
Mono Channel HF 12 kHz shelf
Mono Channel HM 500 Hz–15 kHz, Q=1.8
Mono Channel LM 35 Hz–1 kHz, Q=1.8
Mono Channel LF 80 Hz shelf
Filter (mono input) 100 Hz switchable
Stereo Channel HF 12 kHz shelf
Stereo Channel HM 2.5 kHz, Q=1.8
Stereo Channel LM 250 Hz, Q=1.8
Stereo Channel LF 80 Hz shelf
Reading ref. to Main Outputs 0VU = +4 dBu
Peak Indication Threshold 5 dB before clipping
Lamp Connectors 1x 4-pin XLR-F
Power Requirements 100–240V; 50/60 Hz, 35 W max.
Dimensions (HxWxD) 19.4 x 48.3 x 53.0 cm (7.64" x 19.0" x 20.9")
Weight 10 kg (22.0 lbs)
For pricing options and packages, contact us at
757.498.6118 Ext - 109, Or