Nemphasis O2 Oxygen Bass Preamp

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Page last updated Mar 30, 2026

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Discover the ultimate tool for bass enthusiasts with the Nemphasis O2 Oxygen Bass Preamp. This pedal is designed to bring out the finest nuances of your bass guitar's tone, offering a versatile and powerful sound shaping experience. Whether you're performing live, recording in the studio, or simply jamming at home, this preamp ensures your bass lines always stand out with clarity and authority.

The O2 Oxygen Bass Preamp is crafted with audiophile-grade components, ensuring pristine sound quality and low noise operation. Its intuitive layout features essential controls that allow you to easily dial in your preferred sound, from deep, resonant lows to sparkling, articulate highs. The true bypass circuitry guarantees that your signal remains untouched when the pedal is disengaged, preserving your instrument's natural tone.

Designed with both active and passive basses in mind, this pedal seamlessly integrates into any rig setup. Its robust construction means it's built to withstand the rigors of touring and frequent gigging, ensuring reliability night after night.

Key Features:

Audiophile-grade components for exceptional sound quality
True bypass circuitry to maintain signal integrity
Compatible with both active and passive bass guitars
Intuitive controls for versatile tone shaping
Durable construction for reliable performance in any setting
Designed for both live performance and studio recording

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Marco Sassetti

Nemphasis O2 Oxygen Preamp demo

Marco Sassetti

Nemphasis O2 Oxygen Preamp + G&L Kiloton - Demo Review (ITA)

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Critic Reviews

Nemphasis O2 and Pro Oxygen series pre-amps

guitarinteractivemagazine.com

The Nemphasis O2 Oxygen Bass Preamp impresses with its impeccable sound clarity and practical design, perfect for musicians seeking simplicity and quality. The three-band EQ and intuitive toggle switch offer versatile tone shaping without overcomplicating the setup. While it may not boast the extensive features of other preamps, its clean layout and smooth controls are hard to beat, especially at its attractive price point. A minor drawback is the potential for accidental knob adjustments in live settings. Overall, it's a great buy for those looking for a straightforward, high-quality preamp solution.

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Nemphasis breathes new life into bass preamps with O2 Oxygen pedals | MusicRadar

musicradar.com

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Pricing and availability

Description

Videos

Reviews

Critic Reviews

Nemphasis O2 and Pro Oxygen series pre-amps

Nemphasis breathes new life into bass preamps with O2 Oxygen pedals | MusicRadar

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