Electro-Harmonix Mainframe vs Fairfield Circuitry The Unpleasant Surprise
The Electro-Harmonix Mainframe and the Fairfield Circuitry The Unpleasant Surprise are both pedals sharing fuzzy. The Fairfield Circuitry The Unpleasant Surprise leans octave and full. Current prices: $156.15 vs $219.
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Blended from circuit-archetype lineage, dynamic feel, tone-signal overlap and tone-vector distance — the tone vector itself is derived from editorial description text, not a measured acoustic signal, so this reflects how similarly the catalog copy describes the two, not a lab measurement. Shown only within a gear class, and only where there's enough evidence to be meaningful.30% — somewhat different
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Genres both listings are associated with.- Experimental
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Derived from overlapping tonal signals across both listings.- fuzzy
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Citation/mention fame — how often this gear is cited across artist rigs and gear discussion.$156.15via Reverb
$219via Reverb
The Electro-Harmonix MAINFRAME is a bit crusher and sample rate reducer pedal from Electro-Harmonix, delivering lo-fi digital degradation by reducing the bit depth and sample rate of the guitar signal to produce crunchy, digital fuzz and lo-fi artifacts. Controls include Bit Depth, Sample Rate, Blend (dry/wet), and a Gate control. The MAINFRAME creates 8-bit game console, degraded digital, and aggressive bit-crushed guitar tones.
The Fairfield Circuitry Unpleasant Surprise is a gated fuzz pedal capable of octave fuzz and extreme gated textures. Controls consist of Volume, Onset (a gain and gate-threshold control), and three toggle switches: T (treble cut), G (gain character — open versus compressed), and C (Crush, which engages octave fuzz). The Onset knob controls the onset of fuzz from raunchy gated artifacts at low settings to beautiful sustained distortion at high settings. The C toggle unlocks a lower-octave harmonic character that combines with the gating for abrasive, synth-like fuzz.
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Genres this gear is documented as being used in.- Electronic
- Post-Punk
- octave
- full
- analog warmth
- sustaining