Acoustic Sim
Headrush Dynamics & EQ

Acoustic Sim

Inspired by Boss® Acoustic Simulator

Emulate one's response microphoned acoustic guitar

Work on:

  • Dynamic EQ
  • body resonances
  • transients

Useful for:

  • live without changing guitar
  • fast recordings
  • improve piezo too much “plasticosis”

Control Parameters

Level%
  • Range: 0 – 100%
  • Function: effect output level

Behavior:

  • balance the volume with respect to the chain
  • It doesn't affect the tone

equivalent to output gain

Bodysuits%
  • Range: 0 – 100%
  • Function: simulates the resonance of the acoustic guitar body

Effect:

  • 0–20% → thin / direct sound
  • 30–60% → natural
  • 70–100% → very full / “boomy”

emphasize:

  • low frequencies (≈100–300 Hz)
  • wood resonances
Tone%
  • Range: 0 – 100%
  • Function: global timbral balance

Effect:

  • low → dark / warm
  • medium → natural
  • high → bright / presence

acts as EQ tilt (low vs high)

Modes

Select the acoustic response model

  • Standard: Balanced acoustic emulation
  • use:
  • strumming
  • generic situations
  • Jumbo: Large body (dreadnought/jumbo type)
  • Effect:
  • lower
  • more perceived volume
  • ideal for:
  • accompaniment
  • full sounds
  • Enhance: Improves an already “acoustic” signal
  • Effect:
  • more definition
  • less coloring
  • perfect for:
  • already decent piezo
  • semi-acoustic guitars
  • Piezo: Optimized for piezo pickups
  • Effect:
  • reduces harshness
  • blunts high artificials
  • transforms the “plasticky” sound into a natural one

Pro Tips

  • Too much Body → “boomy” / slurred sound
  • High tone → can become harsh

It doesn't totally replace a real acoustic, but it is very convincing live.

Works best with:

  • clean single coil or humbucker pickups
  • undistorted signal

Quick Reference

  • Level (%): output volume
  • Body (%): body resonance
  • Tone (%): timbral balance
  • Modes: simulation type

Setup Examples

Realistic acoustic simulation

ModeStandard
Body40–60%
Tone50–60%
Levelmatch volume

Natural live sound

Full strumming (band)

ModeJumbo
Body60–80%
Tone50%

Big and present sound

Harsh piezo correction

ModePiezo
Body30–50%
Tone40–55%

Eliminate “plastic sound”

Lightweight enhancer

ModeEnhance
Body20–40%
Tone60–70%

Improve without distorting