Snapshots and modes
Preset, snapshot or stomp — which layer a change belongs on, and why picking the wrong one leaves a gap in your sound.
Three layers, and the gap only exists on one of them
A snapshot is a saved position of the controls inside one preset — which blocks are on, and where their parameters sit. Because nothing is loaded or unloaded when you change snapshot, it happens instantly and delay and reverb tails carry through. A preset change reloads everything and cannot.
There are three snapshots in every preset on this device.
Helix 3.80 Owner's ManualPreset
Small gapA whole rig — every block, every setting, the routing, the lot.
Use for A different song, or a genuinely different setup.
Helix 3.80 Owner's ManualSnapshot
No gapA saved position of the controls within the loaded preset. Nothing reloads.
Use for Verse, chorus, solo. Anything that happens inside one song.
Helix 3.80 Owner's ManualStomp
No gapOne footswitch turning one block on or off, like a pedal.
Use for The thing you want to kick in when you feel like it, not on a plan.
Helix 3.80 Owner's ManualOne preset per song, one snapshot per section
If a change happens inside a song, it should be a snapshot. If it happens between songs, it can be a preset. Almost every complaint about a modeller “cutting out when I change sounds” is a player using presets where snapshots belong.
The exception is a sound you want to reach on impulse rather than on a plan — a boost, a tuner, a bit of chaos. That is what stomp mode is for, and it can sit alongside snapshots rather than instead of them.