The Nocturnal Razer pedal is a fuzz + sub octave pitch shifter + pitch controlled tremolo.
The Fuzz (Unity) is pretty harsh and glitchy. Definitely on the brutal side. There's one switch to turn it on or off. No level, no tone, no gain controls. Take what you're given and be thankful it doesn't blow your amp up.
The pitch shifter has a rotary control that will detune the fuzz signal by 1, 2 or 3 octaves !!! It can also be disabled (off). Tracking isn't too bad. Think Blue Box but nastier.
The tremolo is where things get weird. The tremolo speed is controlled by the pitch of the note you're playing. Makes it hard to stay on tempo if you're playing, and the drummer will hate you. There is also a rotary switch to select from three ranges or disable the tremolo section.
There is also a mixer knob to blend between octave and tremolo effects, turned up to maximum it will produce a hard tremolo effect, and backed off it gets a bit softer and lets more of the other signals / voices through.
There's a 2nd foot switch to select from Raiser and Razer modes (Normal / Insane). Insane mode is highly unpredictable. It will bleed chaos into every pore of your signal. Don't expect anything recognizable to what you are playing. But you can roll back the crazy by turning your tone knob down.
It has a volume knob too. It controls the volume. Amazing.
It can make a wide variety of sounds, from a nasty sub octave fuzz, to glitchy 8 bit sounds, harsh noise, digital monstrosities, flatulent mono synth tones and mountains of noise.
True Bypass Wiring, Top Jacks, 9V DC Jack (boss style), Lifetime Warranty.
Fuzz only at the start, then octaves at 0:20
Tremolo kicks in at about 2:20
Razer mode (insane) at about 4:00