Boost and EQ Pedal
A high-headroom clean preamp designed with simplicity and durability in mind.
$150
Quantity:
1
Features
Fulcrum is a versatile and unopinionated gain staging and frequency sculpting tool.
- Gain control capable of ±20dB boost/cut
- Tilt EQ for broad tonal adjustments
- Internal 30V power supply
- Capable of line-level inputs and outputs
- Knobs "snap in" at their unity positions
- "Hold for momentary" bypass switching
- High quality buffers preserve signal integrity
- Over-voltage protection
Usage
Fulcrum's utility lends itself to a wide variety of situations:
- Push amps and other pedals to the point of breakup (or further!)
- Combine gain and EQ to cut through the mix during solos
- Add a master volume and/or tone control to pedals that lack them
- Bring lower level signals up to line level
- Bring line level signals to instrument level
- In amp and pedal effects loops for easy EQ adjustments
- Make sweeping EQ changes to synthesizers, drum machines, and samplers to better fit in the mix
Demos
Specs
- Power: 9V center-negative 2.1mm connector
- Bypass: buffered
- Current draw: max 75mA (depending on LED brightness)
- Input impedance: 1MΩ @ 1kHz
- Output impedance: 100Ω @ 1kHz
- Size: 4.8 x 2.6 x 1.56 inches
Revision History
Rev 1: initial version
Rev 2 (12/2025):
- Lowered power consumption
- Fully solid state switching system
- Improved SNR and noise rejection


