Walrus Audio Xero Polylooper Pedal Black

The Xero Polylooper is a true bypass, dual-channel looping powerhouse with independent loop control on each channel, stereo panning, variable playback speed, reverse playback, three looping modes, and intuitive stomp gestures. The Xero is your new partner for perpetually endless ways to create new song ideas, practice your licks, or build endless textures on stage.

Two Loop Channels, Fully Independent Control

Xero gives you two independent loop channelseach with its own:

• Loop up to 3 minutes with near infinite stacking of loops
• Unlimited overdubs
• Volume and Pan controls
• Playback speed (0.5x / 1x / 2x)
• Reverse playback option
• You can loop on each channel individually or stack them together to build complex, layered compositionsall in real time.
• Play Naturally. Control Effortlessly.

The Xero’s dual stomp switches keep loop control fast and intuitive:

• Tap the left stomp switch to record and playback loops
• Hold the left stomp to undo
• Tap the right stomp switch to stop loop playback
• Hold the right stomp for speed FX
• Double-press both switches to toggle channel control
• Double-hold to trigger full stop or full erase
• With built-in gestures, you stay in control without menu-diving or complex tap dances. Need even more control? Plug in an external dual-stomp switch to simultaneously take full command of both channelsperfect for live performers and loop-centric setups.

Looping Modes Built for Any Workflow

Switch between three flexible loop sync modes:

Sync Mode Keeps all loops time-aligned to the first recorded loop
Unsynced Mode Let each channel record loops of completely independent lengths
Poly Mode Create polyrhythms using shared time divisions (3:4, 5:7, etc.) for interlocking textures (Supports MIDI clock for precision syncing)
Visual Feedback That Keeps You Locked In

Each channel has its own multicolor LED system showing:

Red, Green, and White for recording and playback controls
Cyan, Pink, Yellow, and Blue LEDs for different speed effects
Channel Control Status via dedicated red LEDs
Instantly know what’s happeningno guesswork needed, even mid-performance.

Speed FX & Direction Controls

Want to flip your loop upside down or twist it in time? Activate Speed FX to unlock:

Half / Normal / Double speed
Reverse playback – Each channels playback behavior can be manipulated independently, letting you remix on the fly.
FX activation syncs to loop start in Sync and Poly modes, ensuring accurate timing
Bypass That Listens

The Xero features true relay bypasswhen no loops are active, the pedal automatically disengages, keeping your tone completely untouched.

Stereo. MIDI. USB. Ready to Integrate.

1/8 MIDI IN/THRU (Type A) for clock sync and remote control
USB-C for easy firmware updates via walrusaudio.io
Stereo in/out with full panning control on each channel
Compatible with Chrome on Mac or Windows for web-based updates
Breakdown of Control Layout

Channel 1

Pan 1: Stereo balance for loop playback
Vol 1: Channel output volume with +3dB of headroom
Speed: 0.5x / 1x / 2x playback speed (when Speed FX is active)
Direction: Forward or reverse loop playback

Channel 2

Pan 2: Independent stereo placement
Vol 2: Channel 2 volume with +3dB boost
Speed: 0.5x / 1x / 2x playback
Direction: Forward or reverse loop playback
External Dual Stomp Compatibility

Breakout and expand stomp controls and add quicker access to secondary features with a TRS dual foot switch

MIDI Integration

Accepts 1/8 TRS MIDI IN (Type A)
Sends MIDI THRU to downstream devices
Supports full MIDI CC control for looping, playback, speed FX, and more
Firmware Updates

Via USB-C using the Chrome browser on Mac or Windows

Visit walrusaudio.io to check for the latest firmware releases