Unlike basic analog flangers, the F.13 gives you four entirely different processing engines that you can cycle through:
Auto (Standard Sweep): This is your traditional, gorgeous analog-voiced flanger. It features a sine-wave LFO that sweeps up and down. You can toggle it to a triangle-wave sweep for a sharper, more linear movement.
Step (Sequenced Patterns): Instead of a smooth, continuous sweep, the flanger’s delay time jumps in stepped increments. This creates rhythmic, robotic, and arpeggio-like patterns that make your guitar sound like a retro 8-bit synthesizer.
Dyna (Dynamic / Envelope): The flanger sweep is entirely controlled by your picking strength rather than an automatic LFO. Plucking hard sends the flanger screaming upward, while light picking lets it settle into a subtle, warm resonance. It's incredibly expressive and acts almost like a vocal auto-wah.
Echo (Flanger + Delay): This mode couples the flanger with an integrated digital delay line. The delay time is tied directly to the flanger rate, creating lush, cascading space echoes and eerie, pitch-bent repeat trails.