Tons of versatility and customization comes with the Source Audio - One Series Mercury Flanger along with great digital recreations of classic tones. With three different presets selectable using the middle switch, these Source Audio tones can be customized using the Neuro App to your heart's content on supported iOS and Android devices. Out of the gate, this pedal's Classic, Thru-Zero and Shadow flangers sounds impressive and warm with control over the "Resonance" and "Delay" to garner some impressive modulation. Stereo-in and -out can be routed in a handful of ways, and take advantage of full MIDI compatibility through the Neuro Hub to sync with other pedals or sync up the tap tempo in perfect unison. Supper clean 9v DC at 300mA sounds quiet and great. Source Audio is showing some impressive synergy that comes with great digital integration.