The Amptweaker Big Rock Pro II is an Amptweaker distortion pedal, currently around $299. Close alternatives include the EarthQuaker Devices Zeqd and the Tech 21 PED PSA Preamp 30 TH ANN. It pairs well with the Marshall Origin 50 Head and the Laney LA30BL 30W Tube Amplifier.

Amptweaker Big Rock Pro II

Amptweaker · pedal

The Amptweaker Big Rock Pro II is a high-feature rock distortion pedal designed by James Brown, expanding on the Big Rock Pro with Depth Finder and DeFizzerator processing for advanced tone control. It includes a balanced DI output with cab simulation and a headphone output, plus three separate effects loops for complex signal routing. Fat and Smooth switches allow the pedal to replicate tones from the TightRock and FatRock families. The integrated DI and studio-quality output make it suitable for direct recording as well as traditional amp use.

What stands out

  • “Built-in Depth Finder and DeFizzerator add bass frequency sculpting and reduction that meaningfully improve cab interaction and DI recording tones”

    — from the reviews

  • “Well suited for studio recording via the built-in cab-sim DI and live use through its three effects loops”

    — from the community notes

  • “the amptweaker big rock pro ii is a high-feature rock distortion pedal designed by james brown”

    — from the listing

  • “fat and smooth switches allow the pedal to replicate tones from the tightrock and fatrock families”

    — from the listing

  • “Balanced DI is a genuine studio-quality output”

    — from the reviews

  • di
  • studio
  • rock
  • fat
  • smooth
  • recording
  • balanced
  • headphone

Good for

  • Silent Recording
  • Silent Stage

Price updated Oct 23, 2026

Genres the Amptweaker Big Rock Pro II is commonly used in

  • Rock
  • Hip Hop
    citedInferred from shared tonal signals, not a stated genre tag.
  • Folk
    citedInferred from shared tonal signals, not a stated genre tag.
  • Metal
    citedInferred from shared tonal signals, not a stated genre tag.
  • Alternative
    citedInferred from shared tonal signals, not a stated genre tag.
  • Acoustic
    citedInferred from shared tonal signals, not a stated genre tag.

Amps that pair well with the Amptweaker Big Rock Pro II

Marshall Origin 50 Head

Marshall

30% match
$699.99via Reverb

pushes an already-dirty tonePushes an already-dirty tone harder and tightens it up. (high gain → mid-forward)

Marshall Origin 50 Head pushes a high gain tone toward mid-forward

Comes later in the signal chain

Laney LA30BL 30W Tube Amplifier

Laney

30% match

pushes an already-dirty tonePushes an already-dirty tone harder and tightens it up. (high gain → mid-forward)

Laney LA30BL 30W Tube Amplifier pushes a high gain tone toward mid-forward

Comes later in the signal chain

Aguilar SL110 Fawn Limited

Aguilar

tonal match

Comes later in the signal chain

Aguilar SL110 Fawn Limited takes that high gain character and pushes it toward tight

EBS Magni 502 2x10 bass combo

Ebs

tonal match
$1047.12via Reverb

Comes later in the signal chain

EBS Magni 502 2x10 bass combo pushes a high gain tone toward tight

Gallien-Krueger Legacy 410

Gallien Krueger

tonal match

Comes later in the signal chain

Gallien-Krueger Legacy 410 pushes a high gain tone toward tight

Gallien-Krueger Legacy 210 Bass Combo

Gallien Krueger

tonal match

Comes later in the signal chain

Gallien-Krueger Legacy 210 Bass Combo takes that high gain character and pushes it toward tight

Gallien-Krueger Fusion 210

Gallien Krueger

tonal match
$1849via Reverb

Comes later in the signal chain

Stack Gallien-Krueger Fusion 210 on top and a high gain tone tightens toward mid-forward

Phil Jones BG-400 Suitcase Compact Bass Combo

Phil Jones

tonal match
$930.97via Reverb

Comes later in the signal chain

Feed a high gain signal into Phil Jones BG-400 Suitcase Compact Bass Combo and it comes out closer to mid-forward

Pedals that stack with the Amptweaker Big Rock Pro II

J. Rockett Archer

pedal

11% match

pushes an already-dirty tonePushes an already-dirty tone harder and tightens it up. (high gain → mid-forward)

What J. Rockett Archer brings here leans toward high headroom — that's worth building a pairing around

Comes earlier in the signal chain

Ashdown Triple Shot

Ashdown

11% match
$179.99via Reverb

pushes an already-dirty tonePushes an already-dirty tone harder and tightens it up. (high gain → mid-forward)

Stack Ashdown Triple Shot on top and a high gain tone tightens toward mid-forward

Comes earlier in the signal chain

Electro-Harmonix Deluxe Electric Mistress

Electro-Harmonix

10% match
$200.51via Reverb

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (high gain → shimmer)

Run the Deluxe Electric Mistress's shimmering analog flange after Big Rock Pro II's own fat, recording-ready gain settles.

Comes later in the signal chain

Mooer A7 Ambience

Mooer

9% match
$87.94via Reverb

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (high gain → ambient)

Run Mooer A7 Ambience after Amptweaker Big Rock Pro II in the signal chain, clear of Amptweaker Big Rock Pro II's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

Walrus Audio Fathom

Walrus Audio

9% match
$181.66via Reverb

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (high gain → ambient)

Run Fathom's lush, studio-grade ambient reverb after Big Rock Pro II's own fat, recording-ready gain settles. — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

Wampler Ego Compressor

pedal

8% match

shapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain.

Run the Ego Compressor's transparent, punchy compression ahead of Big Rock Pro II for even attack before the fat DI gain reacts.

Comes earlier in the signal chain

MXR CAE Wah

MXR

tonal match
$121.14via Reverb

Comes earlier in the signal chain

Put MXR CAE Wah in front of Amptweaker Big Rock Pro II: a wah tracks picking dynamics best on the raw signal

JAM Pedals RetroVibe Mk.4

Jam Pedals

tonal match

Comes later in the signal chain

JAM Pedals RetroVibe Mk.4 pushes a high gain tone toward mid-forward

Cheaper alternatives

Boutique & premium upgrades

Similar charactersee all similar tone character →

See all alternatives to the Amptweaker Big Rock Pro II (cheaper + boutique) →

Questions people ask

What are good alternatives to the Amptweaker Big Rock Pro II?+

The closest matches in character are the EarthQuaker Devices Zeqd, the Tech 21 PED PSA Preamp 30 TH ANN, the Suhr Isoline. Budget picks: Palmer Pepamp Mk II, Palmer Pocket AMP MK2, Boss SD-1 Super OverDrive. Boutique upgrades: Tone King Imperial Preamp, JHS Colour Box V2 10th Anniversary, Laney Billy Corgan signature Amp.

What pairs well with the Amptweaker Big Rock Pro II?+

Strong matches from rig and tone-complementarity evidence: Marshall Origin 50 Head, Laney LA30BL 30W Tube Amplifier, Aguilar SL110 Fawn Limited — Marshall Origin 50 Head pushes a high gain tone toward mid-forward.

How much does the Amptweaker Big Rock Pro II cost?+

Around $299 (live listing price, updated Oct 23, 2026).

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