The Amptweaker Fat Rock is an Amptweaker overdrive pedal. Close alternatives include the Amptweaker AT Fatrock and the Bixonic Expandora. It pairs well with the 1959 Fender Tweed Deluxe and the Carr rambler.

Amptweaker Fat Rock

Amptweaker · pedal

The Amptweaker FatRock is a rock distortion pedal designed by James Brown as a warmer evolution of the TightRock, developed in response to player requests for a version better suited to brighter guitars and amplifiers. Compared to the TightRock, the FatRock extends the low range of the Tight and Tone controls, adds a fixed Fat boost at the front end for a slightly softer attack, and boosts the low-end in the output EQ. An EQ switch converts the tone stack to PlexEQ mode for classic vintage stack character. Three effects loops including the SideTrak loop active when the pedal is off allow complex routing.

  • attack
  • fat
  • boost
  • warm
  • bright
  • rock
  • classic rock
  • distortion

Genres the Amptweaker Fat Rock is commonly used in

  • Rock
  • Classic Rock
  • Hard Rock
  • Metal
    citedInferred from shared tonal signals, not a stated genre tag.
  • Alternative
    citedInferred from shared tonal signals, not a stated genre tag.
  • Blues
    citedInferred from shared tonal signals, not a stated genre tag.

Amps that pair well with the Amptweaker Fat Rock

1959 Fender Tweed Deluxe

Fender

37% match

Into the Tweed Deluxe's woody, midrange-thick voice, Fat Rock's warm, bright attack pushes the amp into real natural breakup.

Carr rambler

Carr

34% match

Into the Rambler's thick, midrange-forward jazz voice, Fat Rock's warm, bright attack pushes the amp toward real breakup.

Blackstar Series One 200

Blackstar

tonal match

Blackstar Series One 200 layers high gain onto an already mid-forward signal

Bogner Barcelona

Bogner

tonal match

Bogner Barcelona fattens up a thin tone

Friedman BE-Mini Head

Friedman

tonal match
$203.48via Reverb

Friedman BE-Mini Head stacks high gain on top of the mid-forward already here

Synergy SL2 Module

Synergy

tonal match

Synergy SL2 Module stacks high gain on top of the mid-forward already here

Mesa Boogie Triple Crown TC-100 Head

Mesa Boogie

tonal match
$2999via Reverb

Put Mesa Boogie Triple Crown TC-100 Head in front and the mid-forward tone leans further toward high gain

Blackstar St. James 100

Blackstar

tonal match
$2074.33via Reverb

Put Blackstar St. James 100 in front and the mid-forward tone leans further toward high gain

Pedals that stack with the Amptweaker Fat Rock

Nobels ODR-1

Nobels

17% match
$105.59via Reverb

The ODR-1's transparent, mid-forward drive stacks with Fat Rock's own warm, bright attack for a fuller push.

Electro-Harmonix Hot Wax

Electro-Harmonix

17% match
$116.79via Reverb

Hot Wax's transparent, stackable drive gives Fat Rock's warm, bright attack a fuller gain stage.

Hughes & Kettner Tube Rotosphere MKII The Analog Leslie Simulator

pedal

13% match

Run the Rotosphere's Leslie-style swirl after Fat Rock's own warm, bright attack settles, so the modulation moves a defined tone.

ThorpyFX The fat general

ThorpyFX

12% match
$194.81via Reverb

Run the Fat General's warm, fat compression ahead of Fat Rock for even attack before the bright boost reacts.

Walrus Audio Fable

Walrus Audio

11% match
$254.99via Reverb

Keep Fable's glitchy, granular reverb-delay trailing after Fat Rock's warm, bright attack, not before, or the effect just smears the drive. — goes in the amp's FX loop (or last, into a clean amp)

FoxGear EchoSex

Foxgear

9% match

Run the EchoSex's rich, vintage-voiced echo after Fat Rock's warm, bright attack settles, so the repeats trail a defined tone. — goes in the amp's FX loop (or last, into a clean amp)

Caline CP-31 Hot Spice (Black)

Caline

tonal match
$52.99via Reverb

Run mid-forward into Caline CP-31 Hot Spice (Black) for more high gain on top

Tone City Hot Mama Overdrive

Tone City

tonal match
$61.80via Reverb

Run mid-forward into Tone City Hot Mama Overdrive for more high gain on top

Alternativessee all similar tone character →

Amptweaker AT Fatrock

Amptweaker

73% similarity

Shared character: noise_gate, fat, hard_rock

Bixonic Expandora

Bixonic

73% similarity

Shared character: single_coils, fat, hard_rock

Maxon OD808

Maxon

72% similarity
$118.63via Reverb

Shared character: hard_rock, pedal, response

Fulltone OCD

Fulltone

72% similarity

Shared character: single_coils, fat, hard_rock

Univox UD-50 Uni-Drive

pedal

71% similarity

Shared character: hard_rock, pedal, classic_rock

Horizon Devices Precision Drive

Horizon Devices

71% similarity
$149.99via Reverb

Shared character: noise_gate, attack, pedal

Amptweaker Tight Drive

Amptweaker

71% similarity
$149via Reverb

Shared character: noise_gate, fat, pedal

Electro-Harmonix Satisfaction Plus Fuzz

Electro-Harmonix

70% similarity
$94.48via Reverb

Shared character: fat, attack, pedal

Xotic BB Preamp V1.5

Xotic

70% similarity
$180via Reverb

Shared character: response, classic_rock, bass

Amptweaker Big Rock Pro

Amptweaker

70% similarity
$299via Reverb

Shared character: fat, attack, hard_rock

Boss OD-3 Overdrive

Boss

95% similarity
$103.97via Reverb

similar tone character

DOD Carcosa

Dod

95% similarity
$123.72via Reverb

similar tone character

See all alternatives to the Amptweaker Fat Rock (cheaper + boutique) →

Questions people ask

What are good alternatives to the Amptweaker Fat Rock?+

The closest matches in character are the Amptweaker AT Fatrock, the Bixonic Expandora, the Maxon OD808.

What pairs well with the Amptweaker Fat Rock?+

Strong matches from rig and tone-complementarity evidence: 1959 Fender Tweed Deluxe, Carr rambler, Blackstar Series One 200 — Into the Tweed Deluxe's woody, midrange-thick voice, Fat Rock's warm, bright attack pushes the amp into real natural breakup..

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