• Created : January 4, 2022
  • Updated : January 5, 2022

Terms and conditions

Before proceeding with download, please consult the terms of use, and more specifically the “impulse response” section : https://overdriven.fr/overdriven/index.php/fr/about/.

These impulse response files (IRs) are free and as mentioned in the Terms of Use, no warranty of any kind is provided with these files (issues, sound problems, inability to use them, sound quality, damages of any kind…).

The riffs and partial song covers presented here as samples are used for illustration and educational purposes (using amps and IRs). These riffs and songs remain the property of their copyright owners.

Cab and Mics

The cab used is a Zilla® Fatboy (2*12) rear-loaded with two Hesu® Demon, 8 ohms, wired in parallel. This collection contains captures of one of the two speakers (the “left” one ). The “left” speaker (-L in the filenames) has both more bass and more bite and provides a more scooped tone. The tone, while very close to the KT88 collection is different with the CLASS-D : these captures are more neutral, with more body in the 200 – 500 Hz area, a tad less at 100 Hz, but with more bass extension below 100 Hz (use a low-cut to avoid mud and regain clarity). The tone is more boxy compared to the KT88 but is probably easier to pair with different amps : you will probably have to lower your mids a little bit…. or not 🙂 . The Demon is made for rock and metal and these captures will work nicely with downtuned guitars.

The Zilla® Fatboy is a very good and balanced 2*12 custom cab, made to order by Zilla Cabs : check ZillaCabs website at https://www.zillacabs.com. The Fatboy is a 212 similar in size and volume to a Mesa Recto 212 or an Hesu 212.

Installation of Demon speakers

The following picture represents the EQ differences between the same mic/position with the CLASS D IRs and the KT88 ones : more presence in the low mids for the class D, resulting in a less scooped tone.

DYN-US-8-P12-90 – Thrasher 50

These two screenshots illustrates also the differences (Thrasher 50 – Torpedo Reload – Nadir) :

DYN-US-8-P12-90 – Thrasher 50

You can also check the KT88 version of these IRs : https://overdriven.fr/overdriven/index.php/uk-212-demon-kt88-home-studio-edition-free-guitar-cab-impulse-responses-download/


Samples to be added soon


Overdriven.fr is not affiliated with the brands mentioned on this page. These products and brand names are listed here to describe the hardware used for impulse capture. All brands belong to their respective owners. Check the legal disclaimer here : https://overdriven.fr/overdriven/index.php/about/ 

Download link

You can download the IR Files under this link : https://overdriven.fr/overdriven/index.php/download/uk-212-demon-ssp1-class-d/

Change log

  • January 4, 2022 : creation
  • January 5, 2022 : added EQ screenshots and link to KT88 version

IR Files

This collection contains the following mics and IR files :

  • DYN-57
    • OD-FB-DEM-DYN-57-P09-15-L.wav
    • OD-FB-DEM-DYN-57-P09-30-L.wav
    • OD-FB-DEM-DYN-57-P10-15-L.wav
    • OD-FB-DEM-DYN-57-P10-30-L.wav
    • OD-FB-DEM-DYN-57-P12-15-L.wav
    • OD-FB-DEM-DYN-57-P12-30-L.wav
    • OD-FB-DEM-DYN-57-P15-15-L.wav
    • OD-FB-DEM-DYN-57-P15-30-L.wav
    • OD-FB-DEM-DYN-57-P20-15-L.wav
    • OD-FB-DEM-DYN-57-P20-30-L.wav
  • DYN-906
    • OD-FB-DEM-DYN-906-P09-10-L.wav
    • OD-FB-DEM-DYN-906-P09-30-L.wav
    • OD-FB-DEM-DYN-906-P10-10-L.wav
    • OD-FB-DEM-DYN-906-P10-30-L.wav
    • OD-FB-DEM-DYN-906-P12-10-L.wav
    • OD-FB-DEM-DYN-906-P12-30-L.wav
    • OD-FB-DEM-DYN-906-P15-10-L.wav
    • OD-FB-DEM-DYN-906-P15-30-L.wav
    • OD-FB-DEM-DYN-906-P20-10-L.wav
    • OD-FB-DEM-DYN-906-P20-30-L.wav
  • DYN-GB-1
    • OD-FB-DEM-DYN-GB-1-V1-P09-05-L.wav
    • OD-FB-DEM-DYN-GB-1-V1-P09-20-L.wav
    • OD-FB-DEM-DYN-GB-1-V1-P10-05-L.wav
    • OD-FB-DEM-DYN-GB-1-V1-P10-20-L.wav
    • OD-FB-DEM-DYN-GB-1-V2-P09-05-L.wav
    • OD-FB-DEM-DYN-GB-1-V2-P10-05-L.wav
    • OD-FB-DEM-DYN-GB-1-V2-P15-05-L.wav
    • OD-FB-DEM-DYN-GB-1-V4-P05-20-L.wav
    • OD-FB-DEM-DYN-GB-1-V4-P09-40-L.wav
    • OD-FB-DEM-DYN-GB-1-V4-P10-20-L.wav
    • OD-FB-DEM-DYN-GB-1-V4-P10-40-L.wav
  • DYN-US-6
    • OD-FB-DEM-DYN-US-6-P09-10-L.wav
    • OD-FB-DEM-DYN-US-6-P10-10-L.wav
    • OD-FB-DEM-DYN-US-6-P12-10-L.wav
    • OD-FB-DEM-DYN-US-6-P15-10-L.wav
    • OD-FB-DEM-DYN-US-6-P20-10-L.wav
  • DYN-US-8
    • OD-FB-DEM-DYN-US-8-P09-50-L.wav
    • OD-FB-DEM-DYN-US-8-P09-70-L-LCUT.wav
    • OD-FB-DEM-DYN-US-8-P09-70-L.wav
    • OD-FB-DEM-DYN-US-8-P09-90-L.wav
    • OD-FB-DEM-DYN-US-8-P10-50-L.wav
    • OD-FB-DEM-DYN-US-8-P10-70-L-LCUT.wav
    • OD-FB-DEM-DYN-US-8-P10-70-L.wav
    • OD-FB-DEM-DYN-US-8-P10-90-L.wav
    • OD-FB-DEM-DYN-US-8-P12-50-L.wav
    • OD-FB-DEM-DYN-US-8-P12-70-L-LCUT.wav
    • OD-FB-DEM-DYN-US-8-P12-70-L.wav
    • OD-FB-DEM-DYN-US-8-P12-90-L.wav
    • OD-FB-DEM-DYN-US-8-P15-50-L.wav
    • OD-FB-DEM-DYN-US-8-P15-70-L-LCUT.wav
    • OD-FB-DEM-DYN-US-8-P20-70-L-LCUT.wav