The Creation Audio Labs Holy Fire Classic 48V Edition is an analog overdrive, distortion and boost pedal in one box, built around the company's original 48V circuit. Creation Audio Labs describes it as delivering "Transparent GAIN, dynamic smooth OVERDRIVE, thick rich DISTORTION," with an ultra-wide bandwidth and an extremely low noise floor, and says it responds like a tube without changing your tone1.
What sets the Classic apart from most distortion pedals is how it generates its gain. Instead of relying only on clipping diodes, the maker says it uses "analog wave-shaping technology to re-shape the waveform and achieve tube-like FX" without adding noise or heavy filters1. The maker pitches the result as "Like a tube preamp in a pedal, but without the bulky, fragile and expensive tubes and transformers"2.
Discontinued. Creation Audio Labs is selling its remaining new old stock of the Classic 48V Holy Fire and states it will not be built again once the stock is gone. Fewer than 20 units were left as of late October 20261.
Three modes in one pedal
The Classic 48V Edition combines three gain stages, each with its own character. The maker describes the pedal as responding to playing dynamics and instrument volume: "Play with a softer attack and velocity for a cleaner sound, or dig in to get as much grit as you want"1.
| Mode | What it does |
|---|---|
| Clean Boost | From off to +12dB of clean volume1 |
| Overdrive | Analog wave-shaping tube emulator technology2 |
| Distortion | Hard edge clipping circuitry2 |
The Classic also carries a hi-cut filter that the maker says shapes the edges of the waveform for a vintage speaker simulation2. For players shopping by effect type, the pedal sits across the overdrive, distortion and boost categories at once, and Creation Audio Labs lists it as great for guitar or bass1.
Power: why 48 volts
The Classic 48V Edition does not run on a standard 9V pedal supply. It operates on 48VDC and ships with a 48VDC universal 90 to 260VAC power supply1. That high internal voltage is central to the design: Premier Guitar's reviewer wrote that "Those 48 volts are put to great use in creating a sound unlike most gain/overdrive/distortion pedals on the market"3.
The 48V requirement is also what led to the pedal's successor. Creation Audio Labs' history of the company notes that a new power boosting circuit "opened the door for a 9V version of the HOLY FIRE"41. The result was the Holy Fire 9, announced in November 2014 alongside the Grizzly Bass. In the announcement the company described it as "A Holy Fire with our new power circuit that steps-up a standard 9VDC pedal power supply to the voltage required by the w[ave-shaping circuit]"5.
The Holy Fire 9 runs on 9VDC at a 250mA pedal power input requirement, with a standard center-negative 5.5 x 2.1mm barrel connector, and the maker recommends the high-current output of a pedal power brick for best results67. Its "G" (Gain) control acts like a master volume on the output, able to add 12dB of pure clean boost or be turned completely off8. Players who want the Classic's circuit without the external 48V supply can find it there.
Where it came from
Creation Audio Labs introduced the Holy Fire as an overdrive distortion pedal built on the 48V wave-shaping approach294. The company's artist page lists the Holy Fire among its products as a "valve tube simulator pre amp"10. The Classic 48V Edition now being sold is the last run of that original design, offered as new old stock1.
The circuit line continued in two directions. The Holy Fire 9, described by the maker as having "the heart of the Holy Fire Classic and the power of a Grizzly," carried the design to standard 9V power8. The related Holy Fire Classic page covers the same 48V platform, and the original Holy Fire page covers the pedal as first released.
What reviewers said
Premier Guitar reviewed the Holy Fire overdrive/distortion pedal and found the high-voltage approach distinctive, writing that the 48 volts create "a sound unlike most gain/overdrive/distortion pedals on the market"3.
"Those 48 volts are put to great use in creating a sound unlike most gain/overdrive/distortion pedals on the market."
Questions
Does the Holy Fire Classic 48V Edition work with a regular 9V supply?
No. The Classic 48V Edition runs on 48VDC and ships with a 48VDC universal 90 to 260VAC power supply, so a standard 9V pedal supply cannot power it. Creation Audio Labs later built the Holy Fire 9, which uses the Classic circuit with a power boosting circuit that steps a standard 9VDC supply up to the voltage the circuit needs.
Is the Holy Fire Classic analog or digital?
It is analog. Creation Audio Labs describes it as using analog wave-shaping technology to re-shape the waveform and achieve tube-like effects without adding noise or heavy filters. The maker says the pristine analog process preserves your original tone.
Can the Holy Fire be used with bass?
Yes. Creation Audio Labs lists the Classic 48V Edition as great for guitar or bass. The company also makes the Grizzly Bass, and the Holy Fire 9 was described as combining the heart of the Holy Fire Classic with the power of a Grizzly.
How much clean boost does the Holy Fire Classic have?
The Clean Boost mode runs from off to +12dB. The maker describes it as responding to playing dynamics and instrument volume: play with a softer attack for a cleaner sound, or dig in for as much grit as you want.
Will the Holy Fire Classic 48V Edition be made again?
No. Creation Audio Labs is selling the last of its NOS (new old stock) Classic 48V Holy Fire units and states the pedal will not be built again once they are gone. As of late October 2026 the maker reported fewer than 20 remaining.
Sources (10)
- HOLY FIRE CLASSIC, Creation Audio Labs
- Holy Fire Classic, Creation Audio Labs
- Creation Audio Labs Holy Fire Pedal Review, Premier Guitar, 2010-03-11
- Creation Audio Labs, Creation Audio Labs
- New Grizzly Bass & Holy Fire 9 by Creation Audio Labs, Premier Guitar, 2014-11-13
- Holy Fire 9, Creation Audio Labs
- HOLY FIRE 9, Creation Audio Labs
- Holy Fire 9 Revisited, Creation Audio Labs, 2026-03-06
- Holy Fire 48V 400mA Universal PSU, Creation Audio Labs
- Guitar Audio News, Tips & Tricks from Creation Audio Labs, Creation Audio Labs





