The rack

The rack is the main page: the guitar comes in at IN on the left and leaves at OUT on the right, through every block in between.

A chain with a Boss Metal Zone, a Peavey 5150, a Mesa cabinet, a hall reverb, then a Mix split with a chorus and a second amp — Blocks are drawn after their gear: a pedal, an amp head, a cabinet, a reverb, and a Mix split.

Blocks are drawn after the gear they stand for (amp head, combo, cabinet, pedal, reverb) and coloured by family: amps red, cabinets orange, drives yellow, reverbs teal, delays green, modulation blue. The LED of a block is lit when it is on. Blocks playing a TONE3000 capture carry its mark.

Adding a block

Tap + at the top right. The list shows the built-in blocks first, then the LV2 plugins, sorted by category. Tap a line to add it at the end of the chain, then hold and drag it where you want it.

The Add effect page, with categories and the Amp, Amp + Cab, Pedal, Cabinet and Space blocks — Add effect: built-in blocks first, then every LV2 plugin found, by category.

Quick knobs

Tap a block to select it. Its controls show as knobs along the bottom of the screen, five at a time; the arrows on the right show the next ones. The buttons on the left turn it on or off, open the full editor, or delete it.

The Peavey 5150 block selected with Input, Output, Normalize, Gate and Threshold along the bottom — A selected amp: Input, Output, Normalize, Gate and Threshold; page 2 has the tone stack.

Bypass and move

Hold a block and release it in place to bypass it. Delays and reverbs keep ringing (see tails).
Hold and drag it to move it anywhere in the chain, including into a split branch.

Splits

The split button, next to +, adds an empty split at the end of the chain:

The split menu: Parallel mix, A/B switch, Left / right — Three kinds of split. A split's type can be changed later, its blocks are kept.

Split	What it does
Parallel mix	Both branches play, mixed together. Each can be panned in stereo mode
A/B switch	One branch plays at a time; switch it live, from a scene or from MIDI
Left / right	The top branch goes to the left output, the bottom one to the right

Tap a split to select it: the panel at the bottom changes its type, switches A/B, sets the mix and the pans, and adds a block to its top or bottom branch. Blocks can also be dragged into a branch, and splits can be nested.

A typical use of Left / right: a cabinet impulse response on one side for the front of house, and no cabinet on the other side for a real guitar cab on stage.

Mono and stereo

The Mono / Stereo switch above the rack sets how the chain is played, and is saved in the preset.

Mono keeps the whole path mono and sends the same signal to both outputs. Use it with a single amp or a single output.
Stereo: the guitar comes in mono and becomes stereo where something makes it so: a Left / right split, a panned Mix split, a stereo plugin or a stereo impulse response. After that point, cabinets, spaces and mono LV2 plugins run once per side. Neural blocks, too costly to double, play the mix of both sides.

In the rack, a single line carries a mono signal and a double line a stereo one.

The meters

IN and OUT at the top left show the input and output levels. The red LED at the end lights when the signal clips: lower the gain of the interface, or the output of the last blocks.