
Anthony Easton
The Oso by Heavy Electronics is a bass distortion pedal designed to deliver heavy tones with precision and simplicity. It features three intuitive knobs: Level, Mix, and Gain. The Mix knob allows for blending the distortion with the dry signal, providing 100% dry or 100% distorted output when turned to the extreme positions. The distortion top-end is rolled off and contoured to reduce harshness commonly found in bass distortion pedals.
Technical Specifications:
- Hand-made in Minneapolis, MN by musicians
- Voiced openly for guitar, bass, or any instrument
- True bypass switching & minimum length leads
- PCB designed, printed, and populated by Heavy Electronics
- 1 oz. copper 1/16” single point mounted PCB
- 24mm large size pots for maximum reliability
- Flying leads to all potentiometers and jacks
- Neutrik or Switchcraft 1/4 inch signal jacks
- Sealed metal LED housing with flying leads
- 9V 200MA power for maximum compatibility
- Powder-coated die-cast aluminum enclosure
- Dual quality-control testing (both audio & build)
- Lifetime warranty (Barring Obvious Abuse)
- Upgrades, repairs, and mods available for life
The Oso is suitable for stage-performing bassists, offering a deep palette of bass distortion tones. Its high gain and low mix settings produce a different sound compared to low gain and mix, despite being dynamically similar. The pedal is designed for ease of use, allowing users to "find the tone" within seconds.
Watch the latest video demos and reviews for the Oso from YouTube. Stompbx updates this every six months to reflect the most popular reviewers and guitar pedal demos for each pedal.

Below are live Reverb listings for the Heavy Electronics Oso from Reverb. Stompbx automatically aggregates current offers to give you a quick look at available models, conditions, and prices. Perfect for comparing options and making an informed purchase.

Very Good
$95

Discover pedals with similar features or sounds to the Oso. This section leverages data to suggest alternatives that complement or expand your pedalboard. Ideal for exploring related sounds or finding a pedal that matches your specific needs.

Fairfield Circuitry
Roger That

Fryette
S.A.S. Distortion

Amptweaker
TightFuzz

Black Arts Toneworks
Ritual Fuzz

KHDK Electronics
Dark Blood

Mojo Hand FX
Iron Bell

British Pedal Company
Compact Series Zonk Machine

Arion
SMM-1

Wren and Cuff
Tall Font Russian

Hartman
BC108 Fuzz

SolidGoldFX
Spanish Castle

Fuzzrocious
Blast Furnace

Death By Audio
Interstellar Overdriver

Hilbish Designs
T-Fuzz

Frantone
Peachfuzz

Fuzzrocious
Grey Stache
Check out the latest news and articles from around the pedal world.

Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton