Why use an Push-Push 500K Preamp?
Unleash the full potential of your humbuckers. The Push-Push 500K is designed specifically to match the higher impedance of double-coil pickups, ensuring that your signal remains punchy, clear, and articulate. This onboard preamp provides the same 20dB of clean MOSFET boost as our 250K series, but calibrated to prevent “loading down” your humbuckers. By integrating this into your control layout, you gain an active gain stage that acts as a studio-grade buffer and a powerful solo boost, all while maintaining the original visual identity of your instrument.
| Know Your Booster | ||
|---|---|---|
| Model | Pot/Switch | Best For |
| Toggle Boost | True-Bypass Toggle Switch |
Minimalist Rigs |
| Push-Push & Push-Pull 250K |
250K Pot | Single Coils |
| Push-Push & Push-Pull 500K |
500K Pot | Humbuckers |
- Boost guitar volume with Push-Push Boost, delivering up to 20dB gain for humbucker pickups.
- Install easily! Onboard effect minimizes soldering with pre-wired harnesses for quick setup.
- Customize your tone! Adjust gain using the onboard trimpot for perfect volume control.
- Replace volume pot with a 500K potentiometer. Fits most electric guitars; tone pad included.
- Activate boost via input jack! Includes 9V battery clip & TRS jack for seamless integration.
- New version with soldering pads for installing treble bleed circuit.
Unleash the full potential of your humbuckers with the Boffin FX Push-Push 20dB Booster.
Engineered specifically for the higher impedance of double-coil pickups, the 500K Push-Push Preamp is the definitive performance upgrade for your instrument. This unit replaces your existing volume potentiometer with an active, high-headroom MOSFET gain stage that ensures your signal remains punchy, clear, and articulate—even through long cable runs.
Why choose the 500K Push-Push Preamp?
Active Impedance Matching: Specifically calibrated for 500K humbucker setups to retain high-frequency presence and eliminate “mud.”
Transparent Solo Boost: Provides a clean, 20dB MOSFET gain stage that pushes your amp without altering your core tonal character.
Tactile Control: Seamlessly switch between your passive signal and an active boost with a single press of the knob.
Frequency Tailoring: Features dedicated soldering pads for easy Treble Bleed integration, allowing you to keep your highs crisp even when rolling back volume.
Pro-Grade Setup: Includes a 9V battery clip and TRS stereo jack harness, designed for clean, efficient installation.
Technical Specifications
Potentiometer: 500K Taper (Optimized for Humbuckers).
Boost: Up to 20dB Clean MOSFET Gain.
Shaft Style: 3/8″ (9.4mm) Threaded Diameter | 23mm Split Knurled Shaft.
Board Dimensions: 1.25″ x 1.25″ (32mm x 32mm).
Total Depth: 2.18″ (53mm) from board bottom to stem top.
Included: 12″ Input Jack harness, 9V battery snap, and tone pad for easy integration.
Onboard Muscle: 20 dB Clean Boost at Your Fingertips
Booster & Preamp Frequently Asked Questions
Do I need the 250K or 500K model?
The choice depends on your pickups: use the 250K model for single-coil pickups to maintain correct impedance loading. Use the 500K model for humbuckers to ensure you retain high-end clarity and prevent signal “loading down.”
How much gain do these units provide?
Our onboard MOSFET preamps provide up to 20dB of clean, transparent gain. This provides enough headroom to push tube amplifiers into natural saturation without coloring your guitar’s original tonal character.
What is the difference between Push-Push and Push-Pull?
It is purely a matter of preference for operation. Push-Push operates like a click-switch (press to engage, press to release), while Push-Pull requires you to pull the knob shaft up to engage and push it back down to disengage.
Will this drain my battery quickly?
Our circuits are designed for high efficiency with an extremely low current draw. When properly installed with a stereo output jack to disconnect the battery when unplugged, a single 9V battery will last for hundreds of hours of playing time.
Can I adjust the boost level?
Yes. Every Boffin FX onboard booster features an internal adjustable trimpot. This allows you to set your “boosted” level exactly where you want it, ensuring a perfect volume match between your clean and boosted signals.
https://youtu.be/_f1X4lty03Q Installation Video https://youtu.be/D2zI5VXqZ2g
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