Fairfield Circuitry PB&J is a precision-engineered JFET Preamplifier and Buffer designed to act as the sonic anchor of your signal chain. PB&J (Preamplifier, Buffer & J-fet) tackles the common issues of impedance mismatch and signal degradation head-on, ensuring that your instrument's natural voice reaches the amplifier without compromise. Housed in Fairfield’s signature raw aluminum enclosure, this utility device combines laboratory-grade transparency with the subtle, musical warmth of high-quality transistors.
Impedance Correction and Harmonic Enrichment
The primary challenge in complex pedalboards is "tone suck"—the loss of high-end clarity caused by cable capacitance and multiple bypass switches. The PB&J provides a high-impedance input buffer that preserves the delicate nuances of your pickups. By utilizing discrete JFET circuitry, it offers a vacuum-tube-like response that feels natural under the fingers. Whether used to restore lost sparkle or as a subtle preamp to push the front end of a tube amp, it adds a layer of definition and punch that passive systems simply cannot deliver.
Professional Line Driving and Noise Management
Strategic placement of the PB&J solves the problem of inconsistent levels throughout a rig. It functions excellently as a line driver at the end of a long chain, ensuring the signal remains robust and noise-free even over extensive cable runs to the stage box or amp. Its ultra-low noise floor makes it an indispensable tool for recording sessions where signal purity is non-negotiable. The minimalist interface allows for quick adjustments, turning a weak, thin signal into a professional, studio-ready tone with minimal effort.
KEY FEATURES
- Discrete JFET-based buffer for superior signal isolation.
- Integrated preamplifier for transparent clean boost applications.
- Restores high-frequency content lost to cable capacitance.
- Musical, tube-like harmonic character without heavy distortion.
- Micro-footprint design for easy integration into any setup.
- Industrial raw aluminum chassis built for life on the road.
TECHNICAL SPECIFICATIONS
- Input Impedance: 1 MΩ.
- Output Impedance: < 1 kΩ.
- Power Requirement: 9V DC, Center Negative.
- Current Draw: Approx. 5 mA.
- I/O: 1/4" TS Input and Output.
- Dimensions: 3.6" x 1.5" x 1.2".
- Circuitry: 100% Analog, Discrete JFET.
- Origin: Handmade in Quebec, Canada.
