

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.
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