Built with a Dimension mode for detuned choral-like effects, an Abbey Mode for a traditional double-tracked voicing, and a Slapback mode for a more experimental, wavy presence, the Keeley 30ms Automatic Double Tracker captures a beloved studio effect and plops it in a pedal. Capable of running in mono or stereo, each function imparts unique functionality like ethereal trails, sharp slapbacks, and room-filling reverb. Packing an array of studio-type choral and reverb like this, the 30ms is a solid choice for post-rock, experimental, and psych.