Same Soul. More Control. All Tone.
We're proud to offer the latest evolution of the modern classic: the Browne Amplification Protein Dual Overdrive V4.
Born from a collaboration between David Brown and world-renowned guitarist/producer Adam Sniegowski, the Protein was designed to be the ultimate "Swiss Army Knife" of overdrive. Whether you are plugging into a boutique rig or an unpredictable backline amp, the Protein V4 delivers consistent, studio-quality drive tones that sit perfectly in any mix.
The Version 4 (V4) update retains the beloved Blue and Green circuits while introducing critical "player-requested" features, including an external 3-way Hi-Cut toggle for the Blue side and expanded internal clipping and EQ options for the Green side.
The Dual-Channel Architecture
The Blue Side (Left): The "Continuum" Tone
Inspired by the legendary Bluesbreaker-style circuit heard on classic records like John Mayer’s Continuum, the Blue side provides a natural, open overdrive with exceptional touch sensitivity.
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V4 Refinements: Revoiced tone control and increased output section to ensure you never run out of volume on stage.
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3-Way Hi-Cut Toggle: Now located externally, this switch (borrowed from the Carbon V2) allows you to instantly tame high-end harshness to match your specific amplifier’s voicing.
The Green Side (Right): The "Nashville" Secret
Based on the iconic "Nashville" overdrive (Nobels ODR-1 style) used by session legends like Tim Pierce and Jerry McPherson.
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Improved Sweep: The gain range has been lowered for a more usable sweep throughout the entire rotation of the knob.
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Tone Shaping: Rebalanced mids for a fuller presence and a tightened low-end that eliminates the "woofiness" often found in original ODR-1 circuits.
The Stacked "Third Channel"
The magic of the Protein lies in running the Green into the Blue. This creates a harmonically rich, high-gain third channel that adds massive "beef" and sustain without the mushiness or loss of note clarity common in other dual overdrives.
Version 4 (V4) Key Features & Upgrades
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External 3-Way Hi-Cut Switch: Fine-tune the top-end of the Blue circuit on the fly.
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Internal Green-Side Customization: Three new internal switches allow for deep-level tailoring:
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Low Cut Toggle: Tightens the low-end further for high-volume clarity.
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Heavy Clipping Mode: Adds more bite and aggressive breakup.
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Asymmetrical Clipping: Introduces "raw" harmonic complexity and a more natural, tube-like edge.
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Split Mode Ready: Features an internal switch to split the two sides for use with professional loop switchers (like RJM Mastermind or Boss ES-5) via TRS cables.
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Form Factor: High-quality black finish with top-mounted jacks and soft-touch switching for easy pedalboard integration.
Power Requirement: 9V DC Negative Center (Standard).
Current Draw: <130 mA.
Dimensions: 4.72" x 3.7" x 2.2" (including knobs).
We are open Tuesday-Saturday from 10am until 6pm CDT.
Any order placed before 3pm CDT Tuesday through Saturday is processed for shipment the same day. Orders placed Sunday-Monday will be processed for shipment the following Tuesday.
For Free Shipping items, Effects pedals and small goods items are generally shipped via USPS Priority Mail, and Guitars and Amplifiers are generally shipped via UPS Ground.
Due to our central location in the middle of the US, most orders will be delivered within 1-3 days delivery time.
Other shipping methods are available (at an additional cost), including next day air.
Please call us directly at (972)540-6420 if you have any questions regarding shipping for your order.

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Product Reviews
2 Reviews
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Great Experience
I like the pedal but I was even more impressed with the quick service. Shipped same day. Thanks
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Excellent service fast shipping
Bought a protein overdrive, arrived 2 days later, very happy with purchase.