Fuzzhugger Phantom Octave

 I do find these small boards less stressful to draw :) This one is small enough to fit in 1590A without any problems, but if you're feeling adventurous you can shave off one row from the right hand side. I left there a bit space so 100µ caps have more room to sit in nicely... Schematic has the onboard LED as 5mm red, but you could try out different colours to see how those affect the octaves.. I must add that this puppy is sounding pretty cool and it is priced reasonably, so you should consider getting yourself an original...

From Fuzzhugger(fx):
Equal parts mysterious and ghastly, the Phantom Octave is a shape-shifting octave fuzz monster!

No controls? They're not necessary--they're at your fingertips! The Phantom Octave is extremely interactive with your pickup selection, picking intensity, and your guitar's Tone control. Like its namesake, the octave will disappear with picking intensity and by rolling back your guitar's Tone control. Octave effect is strongest with low-output single coil pickups.

With the flip of your pickup selector and your picking technique, you'll find huge octave downs, glitchy ring mod-ish tones, and even be able to bang out some simple chords! Set the intensity of the effect by using your guitar's Tone control as a Blend. Roll your guitar's Tone control all the way back, and you've got a chord-friendly fuzz!

The Phantom Octave is a very strange pedal compared to most octave fuzzes...in some ways, it's more stable...in many ways, glitchier. It'll sound different with each set (and combination) of pickups. Some pickup selections will produce more exciting results than others. On most guitars, the Tone knob allows you to blend out the intensity of the octave and glitch. Easier to master and jam on (which is not to call this beast stable, but)--for example, you'll be able to get away with some bends and power chords! You'll quickly get used to the sensitivity of the pedal and what different playing techniques and settings will
produce.

Controls:
• Output: Controls the output level of the Phantom Octave!
• Interacts strongly with your pickup selection (and playing technique). A guitar with a three-way selector means three settings!
• Your Guitar's Tone knob will blend out effect intensity. When blended out, you get a nice smooth fuzz tone!

• Must be used with passive magnetic pickups (standard guitar and bass pickups), and be placed first/early in your effects chain.

Here's demo of Geiri's build: