Markbass MB Instrument Pre Ultra-Compact 3-Band Onboard Bass Preamp
Brand
MARK BASS
The Markbass MB Instrument Pre is a premium, ultra-compact onboard bass preamp circuit engineered for bassists who want to install the legendary Markbass tone directly inside their instrument. Created after intensive testing and constructed using the highest-grade audio components on the market, this 3-band EQ circuit fits effortlessly into almost any standard bass guitar control cavity. It offers pristine, high-fidelity sound reproduction across the entire frequency range, ensuring that even with extreme EQ boosts or cuts, the natural character and intricate details of your bass remain perfectly intact, clean, and focused. Designed for versatile integration, it boasts exceptionally low power consumption and flexible power handling—running smoothly on either a standard 9V battery or an 18V configuration for maximum headroom.
Ultra-Compact Onboard Bass Preamp for Professional Tone Shaping
The Markbass MB Instrument Pre is a high-quality onboard bass preamp designed to give bass players precise control over tone shaping while maintaining a natural, transparent instrument character. Built with ultra-compact circuitry and carefully selected EQ frequencies, it delivers professional-grade active electronics for custom bass builds and upgrades.
Engineered for versatility, this preamp allows musicians to achieve a wide range of tones—from clean and focused modern sounds to rich, harmonically enhanced bass textures—without losing the natural detail of the instrument.
Natural Sound with Advanced EQ Control
The MB Instrument Pre is designed to enhance rather than color your bass tone. Its EQ system provides LOW, MID, and HIGH frequency control, allowing precise shaping of the instrument’s response while preserving clarity across the entire frequency spectrum.
Even at extreme boost or cut settings, the circuit maintains definition and avoids unwanted distortion or loss of detail, making it suitable for both studio recording and live performance environments.
Key Features
- Ultra-compact onboard bass preamp system
- 3-band EQ: Low, Mid, High
- Transparent tone shaping with high headroom design
- Works with passive or active bass configurations
- 9V or 18V operation for flexible installation
- Low power consumption for extended battery life
- Designed for clean, detailed, and balanced bass response
- Compatible with a wide range of wiring configurations
Flexible Installation and Wiring Options
The MB Instrument Pre supports multiple wiring configurations, making it suitable for different pickup layouts and custom bass builds. It can be integrated into volume/volume, volume/blend, or tone-based control systems depending on the instrument design.
Its ultra-compact footprint allows it to fit easily into most standard bass control cavities without requiring structural modifications.
Stable Performance in Active and Passive Modes
One of the key advantages of the MB Instrument Pre is its smooth transition between active and passive modes, with minimal perceived volume difference. This ensures consistent output levels during switching, improving usability in live performance situations.
The circuit is optimized for long battery life and stable operation, even under demanding stage or studio conditions.
Ideal Applications
- Custom bass builds and upgrades
- Professional instrument electronics replacement
- Studio recording bass setups
- Live performance instruments requiring active EQ
- Modern and versatile tone shaping systems
- Luthier and instrument modification projects
Technical Specifications
- Input Impedance: 1.1 MΩ
- EQ: Low / Mid / High
- Power Supply: 9V or 18V (1 or 2x 9V batteries)
- Power Consumption: approx. 700 µA (at 9V)
- Dimensions: 47mm x 32mm x 10mm
- Weight: 35g
- Type: Onboard active bass preamp
What’s Included
- Markbass MB Instrument Pre onboard preamp module
- Wiring components (varies by configuration)
- Installation documentation
The MB Instrument Pre is designed for bassists and builders who want high-quality active electronics with transparent tone shaping, low noise performance, and maximum flexibility in instrument design.
| Brands | MARK BASS |
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