Boss SD-1 Super OverDrive vs Keeley Filaments
The Boss SD-1 Super OverDrive and the Keeley Filaments are both pedals sharing mid-forward, harmonically rich, aggressive. The Boss SD-1 Super OverDrive leans edge of breakup and warm. The Keeley Filaments leans high gain and saturated.
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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.36% — somewhat different
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Genres both listings are associated with.- Metal
- Rock
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Derived from overlapping tonal signals across both listings.- mid-forward
- harmonically rich
- aggressive
- full
Boss SD-1 Super OverDrive
Boss · pedal
Keeley Filaments
Keeley · pedal
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Citation/mention fame — how often this gear is cited across artist rigs and gear discussion.$59via Reverb
The Boss SD-1 Super Overdrive is a long-running and affordable overdrive introduced in 1981, built around an asymmetrical clipping circuit that distinguishes it from the symmetrical Tube Screamer family. The asymmetrical diodes clip each half of the waveform differently, adding even-order along with odd-order harmonics for a slightly grainier, more aggressive, and harmonically rich voice with a touch more body and output. It shares the mid-pushed character that helps notes cut through a band, but feels closer to real tube-amp breakup, especially when pushing an already clean amp. Players use it as a low to medium gain drive or as a boost stacked into a dirty amp or another pedal. Used by Zakk Wylde, Josh Homme, and countless others, it suits blues, rock, and metal rhythm and lead work.
The Keeley Filaments is a high-gain distortion pedal from Keeley Electronics delivering tight, focused, harmonically rich saturation suited to modern rock and metal applications. The circuit provides powerful gain with controlled low-end tightness and mid-presence for note definition in dense playing contexts. The Filaments is positioned as Keeley's primary high-gain distortion offering, providing the saturated, cutting character needed for modern heavy music without the loose, unfocused quality of some fuzz-based high-gain designs.
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Genres this gear is documented as being used in.- Alternative Rock
- Blues
- Classic Rock
- Electronic
- edge of breakup
- warm
- dynamic
- high gain
- saturated
- transparent