Late Roman Avdio

Weltgeist – An Expression Pedal Controlled by Your Playing Dynamics

presents

Weltgeist

The Dynamics You Lost After Compression

Reborn as Control

Weltgeist turns your instrument's playing dynamics into expression control. Instead of moving a conventional expression pedal with your foot, you can control compatible effects directly through how softly or aggressively you play.

Use it to control parameters such as delay feedback, reverb mix, filter movement or modulation depth. Place Weltgeist before compression to capture your original playing dynamics, or after compression to respond to the processed signal.

Weltgeist Pedal

Weltgeist pedal by Late Roman Audio
Weltgeist by Late Roman Audio

Late Roman Audio

Weltgeist

€299.00

Coming soon

Why Weltgeist?

There are dynamic pedals, and there are favorite pedals. Weltgeist turns your favorite pedal into a dynamic one.

Instead of replacing the effects you already love, Weltgeist adds a new layer of control to compatible pedals with an expression input. Your playing dynamics can shape parameters that would otherwise stay fixed or require a conventional expression pedal — tying you to that pedal instead of letting you control the effect naturally from wherever you move on stage.

Keep the sound of the pedal you chose for its character — and let Weltgeist make it respond to how you play.

WELTGEIST / INTERACTIVE 3D

Explore the pedal.

Get a closer look at the controls, switches and physical layout of Weltgeist.

INTERACTIVE MODEL
DRAG TO ROTATE · SCROLL TO ZOOM
CONTROLS SWITCHES LEVEL DISPLAY EXPRESSION CONTROL

Weltgeist Features

Base
Sets the expression position used when the input signal is quiet.
Sensitivity
Adjusts how strongly the expression output responds to changes in input level.
Rise
Controls how quickly the pedal responds as the input level increases.
Fall
Controls how quickly the pedal responds as the input level decreases.
Invert
Reverses the response so louder playing moves the expression position in the opposite direction.

See it in action

Weltgeist in Motion

Video 01

01

Dual Expression

EXP1 drives tremolo. EXP2 controls an inverted delay mix. Then both come alive together.

Video 02

02

Sidechain

An external signal drives the expression response, turning dynamics into control across another signal path.

Pedal Simulation

Try the interactive simulation below to explore how Weltgeist translates playing dynamics into expression control. Switch between the transfer curve and the signal path to view the same response from two different perspectives.

Late Roman Audio

Weltgeist

6.5
1.00
250 ms
3750 ms

Expression Mapping

From Dynamics to Expression

Input Source
0
Input
0.00
Output
0.00

Specifications

Input
1× TS input jack
Expression
2× TRS expression output jacks
Output
1× TS output jack
Output impedance
100 Ω
Power supply
9 V DC, center-negative
Current draw
20 mA
Bypass
True bypass
Dimensions
145 mm × 100 mm × 100 mm
Weight
300 g

Compatibility Notice

The pedal emulates the behavior of an expression-pedal potentiometer, but neither a perfectly linear transfer characteristic nor a constant total resistance across the emulated travel is guaranteed. Use it only with devices that do not require a specific potentiometer resistance. The output is not a true CV signal and may not be compatible with all devices.