FuzzHugger Doom Bloom 7k

The FuzzHugger Doom Bloom 7k is a limited seven-knob version of the Doom Bloom fuzz pedal, made by FuzzHugger Effects. FuzzHugger describes it as a "thick, harmonically rich, high-gain, flexible, overdriven fuzz with thunderous lows," designed to be chord-friendly and to retain clarity even with lower tunings, on guitar, baritone or bass¹. Where the standard Doom Bloom carries six knobs, the 7k adds a Volt control for voltage starving alongside the Push knob, making it what the maker calls an "extra-versatile tweaker"².

The Doom Bloom circuit itself reimagines FuzzHugger's Algal Bloom with new controls, more gain, more lows and more available headroom³. The 7k came out of the maker's own experiments: "I made two 7-knob Doom Blooms for testing / fun"¹.

A thick, high-gain fuzz built for chords and heavy lows

The Doom Bloom family is aimed squarely at players who want a fuzz that does not fall apart under chords or drop-tuned riffs. FuzzHugger's product pages describe the sound as thick, rich and high-gain, with thunderous lows, "designed to hold together and retain clarity with lower tunings (guitar, baritone, or bass)"⁵. That low-end focus is the main thing separating it from the Algal Bloom it grew out of, which the maker characterizes by its thick, high-gain, chord-friendly fuzz tones⁶.

An independent technical analysis of the circuit by Guitar FX Layouts, which published a DIY vero layout for the Doom Bloom in November 2016, echoes the maker's framing: "Designed to hold together and retain clarity with lower tunings"⁷. The same analysis notes how the control set divides the work, with the Body control setting the lows and fuzziness and the High control then shaping the highs separately from Body⁷.

The controls: Volt, Push, Thick, Headroom, Body and High

The 7k's seven knobs are Volt, Push, Thick, Headroom (Clipping/Headroom), Body, High and Level. FuzzHugger describes what each does on its product pages¹²:

The interplay of Body and High is the heart of the pedal for low-tuned players: Body moves the low end without touching the highs, and High then tames harsh clipping in the treble after you have set your lows. The maker notes one quirk of the Thick control on the Doom Bloom circuit: it adjusts hotness, gain and overdrive with massive boosting power, with a slight scratch as the transistor biases in real time⁸.

Power: 9V to 18V DC, center negative

The Doom Bloom 7k requires a 9V to 18V DC center-negative adapter, which is not included, and takes no batteries¹. That adapter-only design means it cannot run off a standard 9V battery, and the center-negative polarity matches most modern pedalboard power supplies.

The Volt knob interacts directly with the supply voltage. FuzzHugger says it adjusts between 3V and 9V, or up to 18V, though the maker prefers the 9V to 12V range². Feeding the pedal 18V from the adapter gives the Volt knob a wider sweep at the top end.

The 7-knob limited edition and the standard 6-knob Doom Bloom

The difference between the two versions comes down to one knob. As FuzzHugger puts it: "The standard 6-knob now has the Push knob instead of the Volt knob. This 7k has both the Push and Volt* knob"². So the standard Doom Bloom gives you Push for boosting and driving, while the 7k carries both Push and Volt, letting you push the front of the circuit and starve its voltage independently.

The 7k is a limited item. FuzzHugger lists it as out of stock and states that "while it's an extra-versatile tweaker, it will be custom-order-only going forward"². The standard Doom Bloom remains in the lineup at $179.00, with sale prices on individual units ranging from $174.00 to $177.00 as listed⁹³². The 7k itself was listed at $199.00 regular price, with a sale unit at $187.00 carrying some minor imperfections in the clear coat¹.

FuzzHugger also builds the Doom Bloom circuit into other formats, including the Custom 2-in-1 Algal Bloom + Doom Bloom, which houses two independent effects in one box, each with its own control set and dedicated jacks¹⁰.

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