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Drunk Beaver's 19th Pedal Drop is a killer confection of Boss OD-1 style 14-Leg Opamp tone generation, with OD-3 style Tone-Stack and additional clipping options

BoostBoost and OverdriveBossDrunk BeaverOverdriveTubescreamer Style Overdrive+-
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2024-GPX-Drunk-Beaver-Khelnytskyi-OD-700.jpg

Key Points

Drunk Beaver’s 19th Pedal Drop recreates Boss OD‑1 14‑leg op‑amp tone using NOS Motorola MC3403 chips (equivalent specs to the original Raytheon 14‑leg opamps; MX3403 designation).


It uses identical OD‑1 component values with an OD‑3 style Tone‑Stack on the back end. A 3‑way diode clipping toggle offers Bottom: Silicon (milspec Polish CEMI, similar to vintage Japanese BAYP‑84A), Middle: No Clipping, Top: two Red LEDs.


Controls: Volume, Tone (from OD‑3), Drive, Clipping: LED / None / Silicon. Available on the Drunk Beaver Webstore. As of 2026-07-13, the price was £150. Analog.Man Mike Piera’s 14 Pin vs 8 Pin video is cited for reference.

I’m so excited to get my hands on this new Pedal Drop pedal. Readers will long have read on this blog that I was desperate to get my hand on an original 14-Leg Opamp-loaded OD-1 style overdrive, but with some additional tone-shaping mods also.

 

And that is exactly what Vitalli has done here. He’s been able to source NOS Motorola MC3403 14-Leg Opamp chips which are the exact equivalent specs of the original 14-Leg Raytheon Opamps - which have the same core designation number - while rather MX3403 designation than RC3403.

 

So the OD-1 tone generation uses identical component values to the very original Boss OD-1, but then with a versatile OD-3 style Tone-Stack on the back-end to greatly increase the versatility of that circuit.

 

You further have a 3-way Diode Clipping toggle switch - where the bottom Silicon Setting uses rare milspec Polish CEMI diodes with almost exactly the same characteristics as the vintage Japanese ones originally used by Boss (BAYP-84A). The middle option gives you ’-’ No Clipping, and the the Top option gives you 2 Red LED’s for a little more open and punchy gain and sustain.

 

I really could not be more excited to get my hands on this - it’s exactly what the Doctor ordered!

 

Controls - Volume, Tone (from OD-3), Drive, Clipping : LED / None / Silicon.

 

These are available right now on the Drunk Beaver Webstore - for a very reasonable $150.

 

I expect these to go incredibly quickly - as these are most definitely a rare breed! It’s fantastic to have 2 such strong Pedal Drop releases one after the other, as the Chernivtsi Trembita Tremolo is a killer proposition too.

As usual there are no official demos of this pedal - while Analog.Man Mike Piera’s 14 Pin vs 8 Pin video below give you and idea of what all the excitement is about.

2024-GPX-Drunk-Beaver-Khelnytskyi-OD-700.jpg

14 Leg / Pin Boss OD-1 Sound Sample Reference

Stefan Karlsson
Posted by Stefan Karlsson
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Stefan Karlsson
Stefan Karlsson
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