Allen & Heath CQ-20B: Backpack-Sized 96kHz Mixing You Run from the CQ MixPad App
Stage-first control without the bulk: The Allen & Heath CQ-20B is an ultra-compact 20-in / 8-out digital mixer built for life on stage and controlled via the free CQ MixPad app, so you can place the mixer where the I/O makes sense and mix from where your ears are.
Pick your workflow per channel: Every input channel can be switched between Quick and Complete modes. Quick Channels focus on application-specific processing with a single-knob approach, while Complete Channels unlock deeper parameter control when you want to fine-tune.
Faster setup and more stable shows: Gain Assistant helps set optimal gain quickly and can continue monitoring levels during performance. Feedback Assistant detects and reduces problem frequencies using up to 16 filters per output for confident monitor and room tuning.
Recording and playback built in: CQ-20B supports multichannel recording and playback with a USB-B 24x24 interface plus an SD card slot for multichannel record/playback on the go. Stereo USB recording/playback via USB-A and stereo Bluetooth playback with a dedicated input channel keep walk-in, stingers, and break music simple.
Connectivity that fits real bands: Inputs include 8 XLR, 8 XLR/TRS combi, and 4 TRS (stereo). Outputs include Main L/R plus 6 XLR monitor outputs, and an assignable Alt-Out is available for flexible routing such as an engineer IEM feed.
Real-World Applications and Sound Roles:
- App-controlled stage mixer for bands that need mains plus multiple monitor mixes from a compact rack/backpack rig
- Mobile DJ control hub with stereo Bluetooth playback, quick gain setup, and fast mute/DCA control for mic moments
- Conference, podcast, and speech workflows using AMM to improve clarity and reduce background noise
Where the Allen & Heath CQ-20B Excels
- App-Driven Stage Control: Designed for stage use and operated via CQ MixPad, so you can mix from the room while the mixer stays near the stage I/O.
- Quick or Complete Per Channel: Switch each input between Quick Channels (single-knob, application-focused processing) and Complete Channels (deeper parameter control) to match the gig pace.
- Faster, Cleaner Gain Staging: Gain Assistant sets optimal gain quickly and can monitor levels during the show to help prevent unexpected peaks.
- Feedback Defense on Outputs: Feedback Assistant detects and reduces problem frequencies using up to 16 filters per output for monitor mixes and room stability.
- Serious Recording Options: USB-B multichannel interface (24x24) plus SD multichannel record/playback keep capture workflows viable for rehearsals, shows, and content.
- Playback Ready for Real Sets: Dedicated stereo USB and dedicated stereo Bluetooth input channels simplify walk-in music, stingers, and phone-based playback.
- Band-Friendly Output Count: Main L/R plus six monitor outputs supports multiple wedges/IEM mixes without external split gymnastics.
- Hands-On Group Control: 4 DCAs and 4 mute groups enable one-touch control of drum kits, vocal stacks, or “mute all stage mics” moments.
- Built for Chicago DJs: Compact transport, quick setup tools, and flexible outputs fit fast venue turnovers where reliability and speed win the night.
Control Modes and Mixing Workflow on the Allen & Heath CQ-20B
Channel control modes (Quick vs Complete): CQ-20B lets you choose how deep you want to go on each input. Use Quick Channels when the goal is speed and consistent results; switch to Complete Channels when you need detailed shaping and advanced parameter control for that source.
- Quick Channels: Application-focused processing with single-knob control to dial in a full channel quickly.
- Complete Channels: More detailed parameter control for precise, in-depth adjustments.
Assist tools that reduce setup time: Gain Assistant speeds gain staging across one or multiple channels, while Feedback Assistant targets problematic frequencies on outputs using up to 16 filters per output for stable monitor and room mixes.
Group handling for live shows: Use 4 DCAs to ride multiple channels as a single fader (e.g., drum kit or backing vocals) and 4 mute groups for instant “mute/unmute” control sets.
Routing and I/O mindset: CQ-20B provides main L/R plus six monitor outputs, and includes an assignable Alt-Out for flexible routing such as an engineer IEM feed. Use the SD slot and USB connections based on whether you are capturing to media or interfacing with a DAW.
Network control modes: CQ-20B can be controlled using built-in Wi-Fi or via the Network port for wired or external network/router workflows, depending on the venue and coverage needs.
Why the CQ-20B Feels Fast in the Real World: Assist Tools, Recording, and Show Control
Quick Channels for Speed, Complete Channels for Precision
A single show can demand both “get it done now” and “tune it right.” CQ-20B supports both by letting you choose Quick or Complete mode per channel. That means you can move fast on utility sources and still dig deep where it matters most.
- Fast approach: Quick Channels for rapid, consistent dialing-in.
- Detail approach: Complete Channels when the source needs deeper shaping.
Setup Insurance: Gain Assistant and Feedback Assistant
CQ-20B focuses on reducing the two most common show-time problems: slow gain staging and feedback. Gain Assistant helps set optimal levels quickly, and Feedback Assistant reduces troublesome frequencies on outputs using up to 16 filters per output so you can mix with confidence.
Capture and Playback Without Extra Boxes
CQ-20B supports multiple ways to record and play back content: multichannel capture via USB-B, multichannel recording/playback via SD card, and dedicated stereo USB and Bluetooth input channels for practical show playback. This keeps the system compact while still content-ready.
DCAs, Mute Groups, and Output Count That Fits Bands
When the set gets busy, control structure matters. Four DCAs and four mute groups make it easier to manage multiple channels quickly, while main L/R plus six monitor outputs support multiple mixes without sacrificing simplicity.
Built-In Wi-Fi and Network Port for Venue-Dependent Control
CQ-20B can be operated via built-in Wi-Fi or through a wired/external network connection. That flexibility helps you adapt to the room: short-range direct control when the stage is tight, or network-based control when coverage and stability are the priority.
How to Deploy Allen & Heath CQ-20B in the Field
Treat CQ-20B as a stage I/O hub you control from the audience perspective. Place it where mic and monitor cable runs stay clean, then connect with CQ MixPad and build the show around quick gain staging, stable outputs, and repeatable routing. Power the mixer on first, then amplifiers or powered speakers; reverse the order when shutting down.
- Network first: Connect to the built-in Wi-Fi for direct control, or use the Network port when you need a wired/external network workflow.
- Gain staging fast: Run Gain Assistant on single or multiple channels to establish clean headroom before rehearsal or soundcheck.
- Build monitors with intent: Use the six monitor outputs for band mixes, then apply Feedback Assistant on outputs when you need added stability.
- Group for the show: Assign DCAs for core groups (drums, vocals, tracks) and set mute groups for quick stage-mic or monitor control.
- Recording workflow: Choose SD for self-contained multichannel capture/playback, or USB-B when integrating with a DAW for recording, playback, or streaming.
- Playback discipline: Use the dedicated stereo Bluetooth/USB channels for walk-in, break music, and stingers without sacrificing mix channels.
Deploy CQ-20B like a modern stage brain: app control, assist tools, and flexible recording keep the show fast, clean, and repeatable.
Why Choose the Allen & Heath CQ-20B from AVMaxx:
Digital mixers are rarely limited by features; they are limited by how confidently they get deployed at show time. AVMaxx helps you translate CQ-20B capability into a repeatable field workflow: app-control setup that fits your venue, output planning for wedges and IEM, and practical routing choices for playback and recording. If you are building a compact rig for bands, corporate events, or Chicago DJ work, we help you get it stable, fast, and easy to run under pressure.
AVMaxx helps you deploy the CQ-20B with confidence: clean signal flow, faster setup habits, and real-world show control for Chicago DJs, bands, and event production teams.
Frequently Asked Questions — Allen & Heath CQ-20B
Do I need an external router to control the CQ-20B?
No. CQ-20B includes built-in Wi-Fi for app control, and it also provides a Network port when you want to operate through a wired or external network setup.
What is the difference between Quick Channels and Complete Channels?
Quick Channels provide application-specific processing that can be dialed in quickly using a single-knob approach, while Complete Channels offer deeper parameter control for more detailed tweaking.
How does Feedback Assistant help on loud stages?
Feedback Assistant detects and reduces problem frequencies on outputs using up to 16 filters per output, helping stabilize monitor mixes and room sound so you can mix with more confidence.
What recording options does the CQ-20B support?
CQ-20B supports multichannel recording and playback via SD card and multichannel recording, playback, and streaming via the USB-B audio interface. It also supports stereo recording/playback via USB-A and stereo Bluetooth playback.
Is the CQ-20B a good fit for mobile DJs and small event production?
Yes. The compact form factor, app control over Wi-Fi, dedicated stereo Bluetooth playback channel, and multiple outputs for monitor mixes make it well-suited for mobile DJ rigs, bands, and event workflows that need fast setup and stable control.
Tell AVMaxx your input count, monitor mix needs, and recording goal, and we will map a CQ-20B control and routing plan that fits your exact show workflow.
