JFET (jay-fet) is a boost pedal rooted in love of the JFET transistor, long-loved in the world of audio for its similarities to vacuum tubes. As always for 29 Pedals it’s a ground-up design, from a blank sheet of paper, an effort to elevate the humble boost circuit to something refined and tonally enhanced.
The JFET circuit has three modes, N for “normal,” where a typical boost might sit in terms of frequency response, almost a treble boost but not quite. “F” adds a little more weight, and “X”. “X” mode flattens the circuit all the way down to below 10Hz, giving you an incredible feeling of weight without sounding like additive EQ. The extension in the frequency response also tightens the phase and gives you an incredible, solid feel. The L control sets the level, it’s a fader after the boost circuit and before the output driver. This means the gain of the first stage is set, and you can use the fader to set the level into the output stage, so THD, hair, and tone remain the same throughout the travel. The output driver after the fader ensures that the output impedance remains consistent. JFET makes about 19dB of gain.
JFET can be used after a buffer or input driver (like EUNA), and also can function as an always-on input driver at the beginning of the board. It sounds great following EUNA and also stacked with FLWR and OAMP. It will drive heavy loads and has high-headroom, making it equally happy at the end of your board. The same WHATEVER power input and relay-based switching as 29 Pedals' other pedals, and instant-bypass whenever power is removed.
Key Features:
- Ground-up JFET boost circuit designed to elevate simple boost functionality with vacuum-tube-like tone, warmth, and responsiveness.
- Three selectable frequency modes including "N" (normal/subtle treble boost), "F" (added low-end weight), and "X" (ultra-flat response down to below 10Hz for solid low-end feel and tightened phase response).
- Post-boost fader Level control placed before the output driver to maintain consistent THD, texture, and tone regardless of output volume.
- Output driver stage ensures consistent output impedance and provides up to 19 dB of clean gain to easily handle heavy loads and pedalboard placement.
- Versatile routing allows for use as an always-on input driver, after a buffer (like EUNA), stacked with drive/gain stages, or at the end of the pedalboard chain.
- Relay-based switching with automatic instant-bypass if power is disconnected.
- WHATEVER power supply accepts 7.5V to 35V in AC or DC with either polarity and zero change in tone.
Got questions?
Head to our contact page or give us a call on 02 9449 8487 and our friendly team will be able to assist you.
