The A/B Test feature in ARC Audio’s DNA DSP software is a powerful audition tool designed for system tuners and critical listeners. It lets users compare two saved presets by switching between them automatically or manually—perfect for evaluating subtle differences in tuning adjustments, EQ settings, or phase alignment.

Set up is simple: choose two presets from the drop downs (Preset A and Preset B), define the switching interval, and press start. You can enable auto-switching on a timer or use the keyboard to toggle manually—ideal for on-the-fly tuning or demonstrating system changes to clients. The currently active preset is clearly highlighted, keeping your adjustments transparent and traceable.

Keyboard shortcuts enhance the workflow:

• Left Arrow: Selects Preset A

• Right Arrow: Selects Preset B

• Space: Toggles between presets

• Enter: Stops on current preset

• Escape: Exits test and reverts to original preset

Whether you’re fine-tuning a competition vehicle or comparing curve sets during an install, the A/B Test provides a fast, objective way to determine which preset best fits your application or listening preference —all without guessing or digging through multiple menus.