The Wren and Cuff Ace Octave Fuzz is an octave fuzz pedal built as what the maker calls a precise recreation of the famous Acetone FM-2 Professional1. It sits in the fuzz family but with an octave element, and Wren and Cuff are careful to set it apart from the better-known octave fuzzes: "A much different pedal than the Tycobrahe Octavia or Univox Superfuzz, this pedal has a tone that is unique among octave fuzzers"1.
What it is and where it came from
Wren and Cuff say the Ace Octave Fuzz is "a precise recreation of the famous 'Acetone FM-2 Professional'"1. The company explains that the work went beyond copying a drawing: "we did not only use a schematic to make this pedal, we actually used vintage units, removed parts, and attempted to replicate the tone of a pedal that has been used for many years"1. That approach of working from original hardware is one Wren and Cuff have used across their fuzz range, which includes pedals like the Tall Font Russian and the Garbage Face.
Controls
The Ace Octave Fuzz keeps its control set simple. Its main voicing control is a Tone toggle switch, which "provides the option of a more mid-range focused sound, or a fat girthy sound with tons of extra lows"1. That gives a player two distinct characters from one switch: a tighter midrange voice that sits forward in a band mix, or a fuller low-end voice with added girth.
Power and connections
The pedal runs on a 9V battery or a 9VDC negative tip adapter using a 2.1mm connector, and draws 5mA1. That low draw means it sits easily on a pedalboard power supply alongside other pedals. Bypass is true hard-wire, so the effect is out of the signal path when switched off1.
Wren and Cuff's product page listed the Ace Octave Fuzz as sold out as of 26 October 20261.
Specifications
| Specification | Value |
|---|---|
| Power | 9VDC neg tip adapter or 9V battery1 |
| Connector | 2.1mm adapter1 |
| Current draw | 5mA1 |
| Bypass | True hard-wire bypass1 |
| Dimensions | 4.4" x 2.4" x 1.2"1 |
| Weight | 7.5 oz1 |
| Warranty | Lifetime warranty1 |
| Made in | USA1 |
Videos
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Questions
Is the Wren and Cuff Ace Octave Fuzz true bypass?
Yes. Wren and Cuff specify the Ace Octave Fuzz as true hard-wire bypass, so when the pedal is off, your guitar signal passes through the switching contacts without going through the effect circuit. It runs on a 9V battery or a 9VDC negative tip adapter and draws 5mA.
What is the Ace Octave Fuzz based on?
Wren and Cuff describe the Ace Octave Fuzz as a precise recreation of the famous Acetone FM-2 Professional. The company says it did not only use a schematic: it used vintage units, removed parts, and attempted to replicate the tone of a pedal that has been used for many years.
How does the Ace Octave Fuzz compare to the Tycobrahe Octavia?
Wren and Cuff describe it as a much different pedal than the Tycobrahe Octavia or Univox Superfuzz, with a tone that is unique among octave fuzzers. It is based on the Acetone FM-2 Professional rather than those circuits.
Where is the Wren and Cuff Ace Octave Fuzz made?
The Ace Octave Fuzz is made in the USA, according to Wren and Cuff's product page, and carries a lifetime warranty.
How much current does the Ace Octave Fuzz draw?
Wren and Cuff list the current draw at 5mA, powered by a 9VDC negative tip adapter or a 9V battery.
Sources (1)
- Ace Octave Fuzz, Wren and Cuff










