The Blackout Effectors Crystal Dagger is a unique dual harmonic guitar effects pedal combining an octave-up fuzz with ring modulation, octaving, and phasing. The fuzz circuit offers high-gain crunch with an octave effect, while the ring mod side delivers robotic, shimmering, and phasing effects. This all-analog pedal produces unique and wild sounds when both effects are engaged, setting it apart in the world of fuzz pedals.