Fromel Supreme Mod Kit for Boss BF-2 Flanger Pedal

Unleash the robust, throbbing flange hiding in your BF-2. Stock, the BF-2 flanger is muddy, thin, and wimpy. This Fromel kit brings out big analog flange while keeping the clarity and warmth of your original tone — dial in everything from subtle filtered flavors to psychotic swirling madness. When it's done, your BF-2 rivals any boutique flanger on the market.

Related: this kit is for the BF-2. Also available for the bass BF-2B and the HF-2 Hi-Band Flanger.

What the kit does (full breakdown)

Goodbye metallic harshness — Fine-tunes the resonance and manual controls for smooth, fat analog flanging.

Fuller tone — Both signal-path op-amps are replaced with socketed high-quality audio op-amps, so your guitar's natural tone is preserved instead of lost in the wash.

Lower noise — All the cheap electrolytic caps are swapped for high-quality film caps for unrestricted, powerful tone.

Faster & deeper — The LFO is fine-tuned for higher maximum speed and greater maximum depth, with all the slow speeds left intact.

Know your speed — A special dual LED glows red in time with the Rate knob when bypassed, and turns blue when the effect is engaged.

Vintage flanging — Parts and instructions are included to voice the BF-2 close to the vintage MXR flanger.

Power supply upgrade — Converts the pedal from the old Boss ACA adapter to the standard PSA adapter, and lets you run at up to 18V for more headroom and clarity.

• Supreme Kit — all the parts plus full-color photo instructions. An easy project with basic soldering skills.
• Have us install — send us your pedal and we'll do it for you.

(Kit only — no pedal included.)

Installing the kit yourself voids the pedal's warranty and is done at your own risk — but with basic soldering skills and the included instructions, it's an easy project. International orders may take 4+ weeks due to customs.