The Flamma Innovation Flamma FC04 is a tuner pedal for electric guitar and bass guitar. Flamma describes it as a high precision tuning pedal with accuracy of up to ±1 points, built into a full-metal body in a portable size1. It sits in the crowded field of compact pedal tuners alongside units like the Boss TU3 Tuner, the Korg Pitchblack Advance and the TC Electronic Polytune 3 Mini, which you can compare on the Tuner Pedals page.
What it does
The FC04 mutes your signal while you tune and passes it untouched when you are done. Flamma specifies a true bypass design, which the maker says preserves your guitar's tone and eliminates unwanted noise and hum1. True bypass means that when the pedal is off, the input jack is connected straight to the output jack with no electronic circuit in the path, which matters on a large pedalboard where every pedal in the chain can affect the signal.
Flamma quotes tuning accuracy of up to ±1 points1. On a pedal tuner, that figure describes how finely the circuit can detect pitch relative to the exact note, so a tighter number means less guesswork about whether a string is perfectly in tune.
Power and practical notes
The FC04 requires a 9V power supply, purchased separately1. That means no power supply comes in the box, so you will need a 9V DC adapter or a spare output on your pedalboard power supply before the pedal will run.
As of 26 October 2026, Flamma Innovation lists the FC04 as sold out on its own product page1.
Price and availability
Flamma Innovation lists the FC04 at $69.00 USD, with a sale price of $49.90 USD, as of 26 October 20261. The pedal is listed as sold out at the same date1, so availability depends on when the maker restocks.
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Questions
Does the Flamma FC04 work with bass guitars?
Yes. Flamma Innovation markets the FC04 as a tuner pedal for electric guitar and bass guitar, so a bass can be plugged straight into it. It is a compact, full-metal pedal with true bypass, and it needs a 9V power supply, which is purchased separately rather than included with the pedal.
Does the Flamma FC04 come with a power supply?
No. Flamma Innovation states that the FC04 requires a 9V power supply, purchased separately. There is no battery option mentioned on the maker's product page, so plan to use a 9V DC pedalboard supply or adapter when adding the FC04 to a board.
Sources (1)
- FLAMMA FC04 Tuner Pedal for Electric Guitar and Bass Guitar, Flamma Innovation
