Formula B Full Range Overview - as stocked by Boost Guitar Pedals

Controls - FUZZ } Level, Fuzz; BOOST } Range : Mid / Hi / Low, Boost; Order : F>B / B>F.
Anniversary Edition has additional SRV / JH switch on FUZZ side

The core concept here is a Silicon variety Fuzz Face (BC108C) with Silicon Treble Booster (BC549) - which you can order in either direction.

There have been at least a few special editions - including the Hendrix version with SI/GE switch, and my Anniversary Edition - with SRV (Stevie Ray Vaughan) / JH (Jimi Hendrix) switch.

This combination of great Fuzz Face with versatile Treble Booster gives you far more flavour than any typical stand-alone fuzz - you get a huge range of superb tones here. And while I of course love Silicon Fuzz Faces, I have even more of a preference for the Extra Harmonics Germanium Transistors are able to deliver. So I would love to have a pair of these - with my second one an all Germanium affair - if Marco can find his way around to that one of these years. I would suggest using some of those fat and juicy Soviet Germanium Transistors that Spaceman Effects Sputnik variants in particular utilise to such fine effect. As in fact does Marco's own Mini Bender Combo.

The SRV / JH switch to the left delivers a 'César Díaz' style Square Face tonality with more volume, more gain, and audible mid frequencies - with super volume cleanup and glassy tone. While to the right you get 'Dallas Arbiter' mode with the mids slightly carved out, volume slightly lower along with frequency focus - a generally softer and rounder tonality for that authentic slightly muddy Hendrix tone.

I pretty much consider this to be the flagship Formula B pedal and the one that really put the brand on the map. I'm delighted with my Anniversary Edition - where I lean very slightly more towards the Hendrix mode!

Controls - Level, Mode : MK 1.5 / Pro II, Attack (Gain / Fuzz).

A fantastic vintage style but modern compact enclosure Bender style fuzz using some of those amazing fat and juicy Soviet Germanium Transistors.

Sounds really authentically visceral and has that handy 2-way switch to flip between MK 1.5 and MKII Pro styles. I personally would like to see an external Bias control too - while you can't really dispute the quality of the output here - really nicely done all-round - and very reasonably priced. Definitely a great example of its kind.

I mentioned above that I feel Marco should use these transistors to make an all-Germanium version of the Fuzz Rangers too. The extra left-hand switch of the limited editions should be replaced with an essential mini Bias knob - if that version were ever to materialise!

Controls - Gain, Level, Boost, Tone, Order : A>B, B>A, separate Footswitches for Drive (A) and Boost (B).

This was the second Formula B pedal I remember encountering - which left an impression. I thought I had featured it already on the side - while apparently I never got around to it quite yet!

This is another really cool take on that classic Marshall 1959 Super Lead Plexi variant, and has featured in several different guises over the years - originally in horizontal Zvex style format, but then compact vertical in blue. While I feel it is best served by its current Black and Gold enclosure livery variant - looks really elegant - as does the whole Formula B family really.

There are a few MIAB pedals with independent boost onboard, but hardly any which allow you to also invert the Boost Order - which puts the Super Plexi at something of an advantage.

This is on my nice-to-have list currently as I have so many MIAB pedals in the collection already. This is for sure a really formidable variant and one that I will likely own eventually too. A lot of the time I feel that to get the most out of Marshall flavours you really need a 3-band EQ - but on occasions - like with this Super Plexi, and with the Keeley El Rey Dorado - 3 or 4 really well calibrate knobs can be perfect too!

Controls - Volume, Intensity, Speed 1, Mode : Chorus / Vibrato, Speed 2, Engage Footswitch, Speed 1 / Speed 2 Footswitch.

A really clever and smartly authentic Uni-Vibe in relatively compact and practical enclosure. I'm of course heavily invested in the compact DryBell Vibe Machine, while this Vintage Vibe is for sure my favourite BB-size Uni-Vibe variant. I love that it kind of allows you to do the Leslie ramp-up / ramp-down sort thing via the 2 switchable speeds.

This is surely one of the most practical of Uni-Vibes, great sounding and in a fantastic form-factor. Moreover the pricing makes it incredibly good value. 

This is the Formula B pedal that sells out the quickest nowadays and it's easy to see why. I will probably need to have one of these in the collection too eventually!