The Amptweaker Big Rock Pro is an Amptweaker distortion pedal, currently around $299. Close alternatives include the Bixonic Expandora and the Suhr Riot Mini Black Edition. It pairs well with the Laney LX20R and the Laney LX35R.
Amptweaker Big Rock Pro
Amptweaker · pedal
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.
- boost
- fat
- modern
- rock
- hard rock
- distortion
- aggressive
- lead
Price updated Aug 27, 2026
Genres the Amptweaker Big Rock Pro is commonly used in
- Rock
- Hard Rock
- Metal
cited
Inferred from shared tonal signals, not a stated genre tag. - Alternative
cited
Inferred from shared tonal signals, not a stated genre tag. - Heavy Metal
cited
Inferred from shared tonal signals, not a stated genre tag. - Psychedelic Rock
cited
Inferred from shared tonal signals, not a stated genre tag.
Amps that pair well with the Amptweaker Big Rock Pro
Laney LX20R
Laney
44% matchThe Big Rock Pro's aggressive gain still comes through at bedroom volume thanks to the LX20R's headphone output and quiet practice voicing.
Laney LX35R
Laney
44% matchInto the LX35R's scooped-mid channel, the Big Rock Pro's aggressive distortion gets the headroom to stay tight instead of collapsing into mush.
Marshall Studio Classic SC20H 20W Head
Marshall
36% matchPush the SC20H's biting, JCM800-voiced midrange with the Big Rock Pro's fat, modern distortion and the crunch compounds fast.
PRS HX 50 Head
PRS
30% matchThe Big Rock Pro's fat, modern distortion stacks with the HX 50's own driven, tube-forward voicing.
Marshall Studio Classic SC20H Limited Purple
Marshall
28% matchInto the SC20H's harmonic JCM800-voiced distortion, Big Rock Pro's fat, modern boost adds real rock aggression.
Marshall MG15GFX
Marshall
28% matchInto the MG15GFX's digital practice-level crunch, Big Rock Pro's fat, modern boost pushes real rock weight.
Suhr Badger 30 Head
Suhr
27% matchInto Suhr Badger 30 Head, Amptweaker Big Rock Pro is right at home: it's built around Marshall-style amps
Blackstar Marco Mendoza
Blackstar
27% matchInto the Marco Mendoza's silent-practice bass EQ, Big Rock Pro's fat, modern boost pushes the amp's own drive into real rock weight.
See all 17 amps that pair with the Amptweaker Big Rock Pro →
Pedals that stack with the Amptweaker Big Rock Pro
K Pedals Variac Overdrive
K Pedals
32% matchThe Variac's spongy, compressed breakup gives Big Rock Pro's fat, modern boost a softer, more dynamic front end.
Subdecay Variac
Subdecay
30% matchSubdecay's spongy, blooming compression gives Big Rock Pro's fat, modern boost a softer, more experimental front end.
Ibanez TS9 40th Anniversary
Ibanez
29% matchThe TS9 40th's smooth, natural mid-hump stacks with Big Rock Pro's own fat, modern boost for a richer push.
Catalinbread Fuzzrite GE
Catalinbread
28% matchThe Fuzzrite GE's thin, garage-voiced germanium fuzz gives Big Rock Pro's fat, modern boost a thinner, more vintage edge to contrast against.
Dunlop Rockma Rockman Metal Ace
Dunlop
23% matchThe Metal Ace's compressed practice-level distortion gives Big Rock Pro's fat, modern boost a tighter, gated front end.
Ashdown James LoMenzo Mega Drive
Ashdown
23% matchThe Mega Drive's filtered bass distortion stacks with Big Rock Pro's own fat, modern boost for a heavier low end.
Dallas Tuxedo 1959
Dallas
23% matchThe Tuxedo 1959's resonant British preamp boost stacks with Big Rock Pro's own fat, modern gain for a richer push.
Klon Centaur
Klon
18% matchStack the Klon's clear midrange boost with the Big Rock Pro's own fat, modern distortion and the two compound instead of blurring together.
See all 13 pedals that pair with the Amptweaker Big Rock Pro →
Cheaper alternatives
Boss OD-3 Overdrive
Boss
73% similarityShared character: chunky, fat, attack
Menatone None More Black
Menatone
70% similarityShared character: fat, smooth, hard_rock
MXR CSP037 Raijin Drive
MXR
70% similarityShared character: fat, smooth, lead
Maxon OD808
Maxon
70% similarityShared character: smooth, hard_rock, distortion
Mooer Spark Distortion Pedal
Mooer
95% similaritysimilar tone character
EarthQuaker Devices Barrows Fuzz
EarthQuaker Devices
94% similaritysimilar tone character
Similar charactersee all similar tone character →
Bixonic Expandora
Bixonic
71% similarityShared character: fat, smooth, hard_rock
Suhr Riot Mini Black Edition
Suhr
71% similarityShared character: smooth, aggressive_playing, hard_rock
Amptweaker Big Rock Pro II
Amptweaker
70% similarity“expanding on the Big Rock Pro with Depth Finder and DeFizzerator processing for advanced tone control”
Amptweaker Fat Rock
Amptweaker
70% similarityShared character: fat, attack, hard_rock
Hotone Chunk Overdrive
Hotone
68% similarityShared character: chunky, hard_rock
Amptweaker AT Fatrock
Amptweaker
94% similaritysimilar tone character
See all alternatives to the Amptweaker Big Rock Pro (cheaper + boutique) →
Questions people ask
What are good alternatives to the Amptweaker Big Rock Pro?+
The closest matches in character are the Bixonic Expandora, the Suhr Riot Mini Black Edition, the Amptweaker Big Rock Pro II. Budget picks: Boss OD-3 Overdrive, Menatone None More Black, MXR CSP037 Raijin Drive.
What pairs well with the Amptweaker Big Rock Pro?+
Strong matches from rig and tone-complementarity evidence: Laney LX20R, Laney LX35R, Marshall Studio Classic SC20H 20W Head — The Big Rock Pro's aggressive gain still comes through at bedroom volume thanks to the LX20R's headphone output and quiet practice voicing..
How much does the Amptweaker Big Rock Pro cost?+
Around $299 (live listing price, updated Aug 27, 2026).