Amptweaker AT Fatrock vs Amptweaker Big Rock Pro
The Amptweaker AT Fatrock and the Amptweaker Big Rock Pro are both pedals sharing full. The Amptweaker AT Fatrock leans mid-forward. The Amptweaker Big Rock Pro leans aggressive.
cited
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.48% — somewhat different
cited
Genres both listings are associated with.- Rock
- Hard Rock
cited
Derived from overlapping tonal signals across both listings.- full
Amptweaker AT Fatrock
Amptweaker · pedal
cited
Citation/mention fame — how often this gear is cited across artist rigs and gear discussion.$299via Reverb
The Amptweaker FatRock is a warm-voiced rock distortion pedal designed by James Brown, creator of the Peavey 5150 circuit. It is the darker, lower-mids-focused sibling of the TightRock, featuring a fixed Fat boost at the front end that reduces high-frequency aggression and extends the low range of its Tight and Tone controls. Aimed at players with bright guitars or amps who want warmer rock distortion, it includes three-band EQ with a PlexEQ switch for vintage stack tones, a SideTrak loop that activates when bypassed for clean effect routing, and a standard effects loop with Pre/Post switching. A retweaked noise gate handles the reduced top end smoothly. Best fit for classic rock and hard rock players seeking a thick, cab-like low end without excess sizzle.
The Amptweaker Big Rock Pro is a rock distortion pedal designed by James Brown, positioned between the TightRock and FatRock in the Amptweaker family. With Fat and Smooth switches it covers the sonic territory of both TightRock and FatRock tones from a single unit. It includes dedicated lead gain and boost controls plus multiple effects loops for signal routing. The pedal targets heavier rock and alt-rock material, delivering a more aggressive and modern sound than the TightDrive Pro while remaining accessible across rock genres.
cited
Genres this gear is documented as being used in.- Alternative Rock
- Metal
- Classic Rock
- mid-forward
- aggressive