Analog preamp and tone control system designed specifically for upright bass piezo pickups

Why upright bass piezo pickups need a dedicated preamp

Upright bass piezo pickups require proper impedance matching and carefully controlled low-frequency behavior to sound natural and stable.

When connected directly to mixers, interfaces or standard instrument inputs, the sound often becomes thin, nasal or difficult to control at higher stage volumes.

PiezoZoid for Double Bass is designed specifically to improve low-frequency response, reduce harsh piezo artifacts and preserve the natural dynamics and body of the instrument.

Analog tone shaping for upright bass

The analog EQ section is optimized for the upright bass frequency range and allows flexible correction of different pickups, instruments and amplification systems.

Low-frequency buildup, excessive piezo midrange and harsh upper response can be adjusted while maintaining articulation, bow response and note definition.

This helps the bass remain natural, controlled and easier to manage in live and studio environments.

Compact standalone upright bass setup

PiezoZoid is designed to function as a compact all-in-one upright bass front-end.

The stable low-impedance output allows direct connection to:

• bass amplifiers
• pedalboards
• mixers
• audio interfaces
• powered speakers

In many situations, PiezoZoid alone is enough to prepare the bass signal for stage or studio use without additional external preamps or DI boxes.

PiezoZoid DI version

The DI version expands the system into a complete compact stage solution for upright bass players.

Additional features include:

• Balanced XLR DI output
• Send / Return effects loop
• Direct connection to mixers and PA systems
• Compact pedalboard-style workflow

This allows PiezoZoid DI to function as the central control unit for a complete upright bass setup.

Key features

• Designed specifically for upright bass piezo pickups
• 10MΩ high-impedance analog input
• Analog EQ optimized for upright bass frequency range
• Improves low-frequency control and reduces harsh piezo artifacts
• Natural dynamics and bow response
• Compact standalone format
• Stable output for stage and studio use
• Rechargeable battery with USB-C charging
• Handmade analog circuit

Additional features of PiezoZoid DI

• Balanced XLR DI output
• Send / Return effects loop
• Direct connection to mixers and PA systems
• Compact autonomous upright bass rig

Technical specifications

• Input impedance: 10MΩ
• Circuit type: Analog
• Intended instrument: Upright Bass / Electric Upright Bass
• Application: Live / Studio
• Power: Rechargeable battery, USB-C charging port
• Dimensions: 100 × 45 × 45 mm
• Dimensions (inches): 3.93" × 1.77" × 1.77"