All the parameters in digit can be controlled with the on board modification system. If you want wetter delay on the 1 beat, filtered reverb when you dig in, ducked repeats, it's all possible. Digit has on board  sequencers, LFOs, envelope followers and envelope generators. This can all be sent over MIDI too. 

 Effects can be run in any order or into  each other and you also have up to 3 inserts / effects loops. This  allows  you to have a pedal just effecting one of your delays repeats while  another pedal effects your reverb tail or for you to mix different  chains. This isn't just an effect loop though, it's a mixer. Levels can  be changed by the modifiers so you can play harder and get more of the  effect or the amount of effect can change over time.  

4 in / 4 out

MIDI input and output on TRS, USB

5" touch screen

Multiple built in effects on wet paths including resonant filters, EQ, compressor, saturation, tape / tube emulation and more

All  main effects can run at once

Flexible routing / matrix mixer

Tap tempo with multi-master sync

Ableton Link.

MIDI Clock out.

Many reverb types

Can modulate delay time

Individual subdivisions and full control per delay.

Very short to very long delay (microseconds to 30 seconds)  

Weird ratios possible.

Supports USB WiFi or ethernet dongles for network MIDI / Link.

Ludicrous number of presets slots

Preset browser / tagging for easy navigation

Many built in cabinet IRs.

9V 500ma power required