Inputs and outputs
Every jack on the Helix Stadium Floor, on a diagram you can click — what it's for, and the thing about it that costs people an evening.
Helix Stadium Floor · Rear panel · schematic, drawn from Line 6’s panel diagram
INSTRUMENT
TS, ¼″rear panel
Your main guitar or bass input.
It has switchable impedance, a pad and a noise gate built into the input itself — before any block. If a guitar sounds harsh or noisy, fix it here rather than spending a block on it.
Helix Stadium Floor Cheat Sheet (Rev A)Facts about the audio path
There are three separate outputs, each with its own mix
Main, alternate and headphones. Each has its own level and its own Matrix cue mix, chosen with the three buttons above the Volume knob. This is a small mixing desk, not a master volume.
Helix Stadium Owner's Manual 1.3.2The Volume knob only moves one output at a time
Whichever button above it is lit. Hold two or three buttons for two seconds to link them and drive them together.
Helix Stadium Owner's Manual 1.3.2The FX returns can become always-on aux inputs
Set that way, Returns 1 and 2 let you monitor the house mixer, a click, or a playback rig through the same headphones as your guitar.
Helix Stadium Floor Cheat Sheet (Rev A)The microSD card is where songs live
Loops, preset clips and song tracks are all stored on it. It ships fitted, under the security panel, which is why most owners never notice it.
Helix Stadium Floor Cheat Sheet (Rev A)It is USB-C, and 8-in / 8-out
The first Helix to move off USB Type B. Re-amping and MIDI both run over the same cable.
Helix Stadium Floor Cheat Sheet (Rev A)The input has a gate and a pad before any block
Impedance, pad and noise gate are properties of the Instrument input itself. Using them costs you nothing from the block budget.
Helix Stadium Floor Cheat Sheet (Rev A)