Amptweaker Bigrock Pro

$239.00 Price Tier: High-end

4.5 (3)

1 Review

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Page last updated May 25, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated May 25, 2026.

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Reviews

Price

5.0 (8)

$239.00 4 available Used

View Deal

Average Price: $239

High-end/Boutique

$80

$181+

Price Tier

In the Distortion Effects Pedals category, Amptweaker Bigrock Pro is priced in the High-end/Boutique range. This premium gear is built to very high standards and offers premium features.

Budget

Standard

High-end

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Description

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Unleash your guitar's full potential with the Amptweaker Bigrock Pro, a masterstroke of engineering designed to elevate your sound. Created by the visionary minds at Amptweaker, this distortion pedal is the lovechild of the iconic Tight Rock and Fat Rock pedals, offering unmatched versatility and aural richness. With its roots in the genius of a former Kustom Amps Head Engineer, the Bigrock Pro is your gateway to crafting signature tones that stand out. Whether you're laying down riffs in the studio or shredding on stage, this pedal combines the best of both worlds, ensuring your sound is always on point.

Key Features:

Dual-channel design for seamlessly switching between Tight Rock's precision and Fat Rock's warmth
Built-in noise gate to maintain clarity and eliminate unwanted noise
Effects loop with Pre/Post switch to integrate seamlessly with other pedals and effects
True Bypass for uncolored signal when the pedal is disengaged
Tight and Fat switches to further tailor your sound profile

Product specs

Brand	Amptweaker
Model	Big Rock Pro
Finish	Brown
Year	2010s
Made In	United States
Categories	Overdrive and Boost Pedals

FAQs

What type of power supply does the Amptweaker Bigrock Pro require?: The Amptweaker Bigrock Pro requires a 9V DC power supply, and it can also operate with an 18V supply for increased headroom.
Does the Amptweaker Bigrock Pro work well with both single-coil and humbucker pickups?: Yes, the Amptweaker Bigrock Pro is designed to perform well with both single-coil and humbucker pickups, offering versatile distortion tones suitable for various guitar types.
What are the standout features of the Amptweaker Bigrock Pro's distortion sound?: The Amptweaker Bigrock Pro offers a dynamic, high-gain distortion with a focus on clarity and articulation, making it ideal for rock and metal genres.
Can the Amptweaker Bigrock Pro be used as a boost pedal?: Yes, the Amptweaker Bigrock Pro includes a boost feature, allowing you to enhance your signal for solos or to drive your amp harder.
How does the Amptweaker Bigrock Pro differ from the original Bigrock pedal?: The Bigrock Pro version includes additional features such as an effects loop, boost control, and more tone-shaping options compared to the original Bigrock pedal.

Videos

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Brett Kingman

Amptweaker: BigRock Pro Distortion/Overdrive

Brett Kingman

NAMM '14 - Amptweaker BigRock Pro Demo

Premier Guitar

AmpTweaker BigRock Pro : Overview & Demo : Winter NAMM 2014

The Tone King

PDC-TV Gear SHOOTOUT: Amptweaker BIG ROCK PRO vs 100w FRIEDMAN modified MARSHALL

Perfecto De Castro

Amptweaker - BigRock Pro - sound check for Metal

YaShogo

OrkSmegga reviews the Amptweaker BigRock Pro

OrkSmegga

Reviews

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PROS

Emulates 5150 Blue channel tone accurately
Versatile cab simulation feature
Ideal for 80s hard rock and metal tones
Effective built-in noise gate eliminates need for external noise reduction
Dual plexi options enhance sound versatility
Built durably, "built like a tank"
Can sculpt tone extensively with EQ and gain settings
Functions well as a preamp, especially in effects return
Boost function enhances solos and specific riffing
Offers distinct sounds for both solid state and tube amps

CONS

Name may mislead potential users about its metal capabilities

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Amptweaker Bigrock Pro.

Features and functionality

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The Bigrock Pro offers versatile high gain with FX loops for clean vs. dirty signal switching.
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The Bigrock Pro has less gain than other models but still provides substantial high gain capability.
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The Bigrock Pro II features a gate knob, replacing the previous toggle switch, providing more nuanced control over noise gating.
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The pedal includes a defizz knob, presence and resonance controls, expanding its tonal shaping capabilities significantly.
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Users find the sidetrack feature on older models useful for small board setups and clean amp configurations.
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Comparisons

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The TightRock and BigRock pedals are closest to the 5150/EVH tone.
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The Bigrock Pro II is considered by some users to be more suitable for modern tones compared to the higher gain Tight Metal model.
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Build quality

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Some prefer the old enclosures over the new designs due to aesthetic changes.
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Some users prefer the aesthetics of the new Amptweaker pedals, finding them superior to the original designs.
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The older versions feature larger enclosures, which some users perceive as more robust compared to the newer compact models.
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User experience

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The Tight Metal can transform a clean tube amp into a high-gain powerhouse with its extensive control options.
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Owners appreciate the extensive FX loops, enabling the integration of multiple effects without needing an additional line switcher.
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Owners of the older Bigrock Pro appreciate James Brown's customer service, noting his willingness to provide parts for discontinued models.
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Use cases and applications

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The Amptweaker Fat Metal Pro is optimized for single coils but performs well with humbuckers too.
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The effects loop is particularly valued for applying clean effects like chorus, which may not suit distortion-heavy settings.
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Value and pricing

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Older Bigrock Pro units are valued higher due to their association with James Brown, the original designer, and are considered more collectible.
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4.5 out of 5

Based on 1 Review and 3 Ratings

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manos_terzakis

100

over 8 years ago

Yes !!!

Simply one of the best higain pedals around. Plug and play attitude with a sum of options and tweaks for a more personal sound. James Brown is a legend ...