by soulsonic » Thu Mar 19, 2009 11:38 pm
I like octave fuzz that you can actually hear a true octave coming out and not just a bunch shrill spitty noise over top of everything. With a properly tuned Octavia, you can get it to do true octaves all up and down the neck, even on the low strings. And it can get some really nice almost ring mod effects with chords.... yes, it can actually put out something musical with chords and not just an awful ball of noise (unlike the Foxx Tone Machine... or as I call it, the "F#%king Ball of Noise" pedal).
I think the biggest issue with the Tychobrahe one is the notorious "backwards" transistor in the first stage... if the Chicago Iron one is an exact clone, the first transistor will be backwards and this is responsible for (I'd estimate) about 70% of the sputtery misbiased sound it makes.
I wrote a big long rant about this over at Freestomp in the Workbench section. I spent a weekend playing with the Octavia and several other octave circuits on proto board and that's where many of my discoveries and opinions have come from. Before that, I'd only ever used a Tone Machine clone, which I thought was useless for octaves. I had almost totally given up on being satisfied with octave fuzzes until I finally got the Octavia to behave how I wanted and now it's one of my favorite effects.