Alexander Syntax Error XP Stereo lo-fi/glitch multi-FX with 8 engines, assignable LFO and 32 presets

8 modes (buffer glitch, ring mod, freq shifter, sample crush, “broken” pitch, etc.) · Stereo I/O (TRS) with phase correction · 32 presets (4×8) · Ramping + expression + USB-MIDI · Configurable trails · Leap Series (more headroom + DSP)

The Alexander Syntax Error XP is a lo-fi/glitch multi-effects pedal built to turn any instrument—guitar, bass, keys, or anything else—into a playground of arcade textures, digital grime, and controlled chaos. It’s not just a noisemaker: it’s a deep sound-design platform with 8 sound engines, performance-ready control, and a fast workflow for live use.

As part of the Leap Series, it upgrades the platform with stereo input/output, phase correction, a low-noise direct-coupled audio path, improved headroom and frequency response, and a far more powerful FXCore DSP. You also get 32 onboard presets accessible directly from the pedal, plus serious real-time control: assignable LFO modulation, ramping/morphing between knob states, expression, external switch, and MIDI over USB.

The eight modes cover everything from buffer-based glitch to early rack-style reverbs with grime, ring mod, math distortion, a true frequency shifter (Hz offset), FM warping, pitch shifting with the safety rails removed, and an envelope-driven sample crusher.

Key features

• Stereo lo-fi/glitch multi-FX with 8 engines and deep tweakability
• Leap Series upgrades: more headroom, improved response, more DSP power
• Stereo I/O (TRS or dual) with phase correction
• 32 onboard presets (4 banks of 8), accessible on the pedal
• Assignable LFO for parameter automation
• Ramping / morphing via ramp footswitch, expression, or MIDI
• Configurable trails (hard / full / auto) for reverb+delay tails
• MultiJack for expression, footswitch, or MIDI input
• USB for firmware updates and USB-MIDI
• Buffered bypass

Sound modes

• STRETCH: glitchy buffer playback at variable speed/direction
• AIR: early rack-reverb vibes with sample-crush dirt, pitch, grainy diffusion
• RING: ring mod from tremolo to robot gongs + sample/hold carrier chaos
• CUBE: math distortion + resonant filter
• FREQ: frequency shifter (Hz offset) for phaser-like or truly weird feedback tones
• WAVE: FM-style warping from vibrato to clangy percussion
• GLITCH SHIFT: pitch shifting with extra artifacts and “no safety rails” behavior
• DYNAMIC: envelope-controlled sample crusher with different targets for quiet/loud

Technical specifications

• Input: mono or TRS stereo (selectable without opening the pedal)
• Output: mono, dual-cable stereo, or TRS stereo
• Input impedance: 1 MΩ
• Output impedance: 560 Ω
• Power: 9V DC only, 250 mA or greater (isolated supply required)
• Size: 4.7" × 2.6" × 1.5" (H × W × D, excluding knobs)
• Presets: 32 (4 banks of 8)
• Control: MultiJack (exp/footswitch/MIDI), CTL footswitch (tap tempo + ramp), USB (firmware + USB-MIDI)
• Bypass: buffered

Find the Alexander Syntax Error XP and a carefully curated selection of boutique pedals at onemorepedal.com, your specialist store for high-end effects with real performance control.

Dial-up chaos, but saved in presets.