The Damnation Audio Dirtfixer is an analog bass blender and equalizer: a pedal that lets you run a dirt pedal in a loop against your clean bass signal, so the low end survives whatever the pedal in the loop does to it. Damnation Audio describes it as turning every pedal into a bass pedal, refining distortion boxes with no loss of low end, and calls it the expanded follow-up to the Damnation Audio True Bypass Loop Blender1. It is currently listed as sold out on the maker's product page1.
What it does and how it is controlled
The Dirtfixer works as a parallel blend: your bass goes into the IN jack, a pedal sits in the loop, and the OUT jack feeds the input of your amp. The DRY control sets the volume of the clean signal and the WET control sets the volume level of the pedal in the loop, so you can dial in exactly how much of the affected signal sits under your clean tone. Damnation Audio also describes a parallel clean blend with full range and contour modes, and a powerful EQ to shape the tone of pedals in the loop1.
The EQ works on the wet signal, with four bands, each offering boost and cut1:
| Control | What it does |
|---|---|
| DRY | Volume of clean signal1 |
| WET | Volume level of pedal in the loop1 |
| BASS | 100Hz boost/cut on WET signal1 |
| LOW MID | 300Hz boost/cut on WET signal1 |
| HIGH MID | 800Hz boost/cut on WET signal1 |
| TREBLE | 2.2kHz boost/cut on WET signal1 |
RockBoard's PedalPedia classifies the Dirtfixer as an equalizer, preamp and switcher2, which reflects the three jobs it combines: tone shaping, level control and the loop blending.
Power
The Dirtfixer runs on a 9V center negative DC input, and Damnation Audio specifies 9V only. RockBoard lists the current draw at 35mA2.
There is no battery option: the pedal needs a 9V DC center negative supply. At 35mA it is within reach of most pedalboard power supplies, but check your supply's per-output current rating before sharing it with other pedals.
Where it sits in Damnation Audio's range
The Dirtfixer is a blending and tone-shaping tool rather than a dirt pedal itself, so it pairs naturally with the maker's bass distortion and fuzz designs, such as the Damnation Audio Curmudgeon 2, the MBD2 MOSFET Bass Distortion 2 or the Bass Fuzz Enforcer. For more on the wider category, see Bass Pedals, Equalization Pedals and Preamp Pedals12.
Videos
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Questions
What does the Damnation Audio Dirtfixer do?
The Dirtfixer is a bass blender and equalizer. It holds a clean bass signal alongside a pedal connected to its loop, so you can set the volume of the clean signal and the volume of the pedal separately, then use a four-band EQ to shape the tone of the pedal in the loop. Damnation Audio describes it as turning every pedal into a bass pedal, refining distortion boxes with no loss of low end.
Is the Dirtfixer analog?
Yes. RockBoard's PedalPedia lists the Dirtfixer as an analog circuit, and classifies it as an equalizer, preamp and switcher.
Can I run the Dirtfixer from a battery?
No. Damnation Audio specifies a 9V center negative DC input only, so there is no battery option. It draws 35mA, which is within reach of most pedalboard power supplies, but the pedal needs its own 9V DC feed.
Is the Damnation Audio Dirtfixer sold out?
Yes. Damnation Audio's own product page listed the Dirtfixer as sold out as of October 2026.
What frequencies does the Dirtfixer EQ adjust?
The four EQ bands work on the wet signal: BASS at 100Hz, LOW MID at 300Hz, HIGH MID at 800Hz and TREBLE at 2.2kHz, each with boost and cut.
Sources (2)
- Dirtfixer, Damnation Audio
- Dirtfixer by Damnation Audio, RockBoard PedalPedia, 2026
