DESCRIPTION

When evaluating Trickfish electronics, it helps to understand their core engineering philosophy. Their primary goal is not to change your tone, but rather to make your instrument sound like the best, most refined version of itself. This is not a heavy-handed preamp that bakes a colored EQ signature into your signal.

What it does is bring out more of the fundamental character that you already love about your bass, while giving you the EQ control to adapt to any musical situation. The J Core provides you with four musical bands of EQ, allowing you to bring forward or pull back precise frequencies depending on the demands of your live mix. If you are battling heavy guitars, you can quickly punch up the low-mids for stage authority. If you are playing a delicate acoustic set, you can roll off the extreme highs for a warm, supportive foundation, and anywhere in between.

Because it requires a side-mounted output jack to accommodate the expanded control layout, this is the perfect drop-in preamp for deluxe-style Jazz Basses. It eliminates the limitations of a standard two-band EQ, giving you command over your midrange, which are the most important frequencies for bass players. You get pristine highs, punchy mids, and a foundational low-end that remains clear and distinct. Built with high-quality components, it features a remarkably low noise floor, ensuring quiet operation even when you boost the treble.

If you are a bassist looking for an onboard preamp that will bring out the best qualities of your core tone while providing a significant amount of added EQ flexibility, you should take a close look at the Trickfish J Core.

From Trickfish

The J-Core preamp takes Trickfish's widely acclaimed Flexcore Onboard Bass Preamp to the next level - now in a hassle-free Jazz Bass plate drop-in design. No modifications, no soldering, just pure performance.

Powered by the incredibly flexible and supremely musical Mike Pope-designed preamp with a 4-band EQ, the J-Core puts tonal control at your fingertips. With internally selectable EQ points for each band and refined signal path enhancements, it’s designed to bring out the best in every note you play.

All this, plus a 9-volt battery, fits neatly into your existing Jazz Bass control cavity. Effortless design meets exceptional sound.

Trickfish has swapped out traditional jumper-style selectors inside the J-Core for intuitive rocker-style mini switches. These make it easier than ever to fine-tune the frequency centers of each of the 4 EQ bands, allowing you to customize the EQ to match your bass’s unique voice and your personal tonal preferences.

With selectable frequencies at 46Hz or 90Hz, 330Hz or 473Hz, 600Hz or 900kHz, and 6kHz or 10kHz, the J-Core offers precise control to shape your sound exactly how you like it. Additional switches allow for 0, 3, 6, or 8 dB of output gain.

A hallmark of a truly versatile Jazz Bass is its passive tone control. Some players prefer a subtle tone roll-off that preserves midrange presence, while others lean toward a darker, more classic passive tone. The J-Core comes stock with a .022 Cap and can be easily customized with an additional through-hole parallel capacitor.

For years, the Flexcore has set the benchmark for players seeking unparalleled fidelity, clarity, and warmth from their active instruments. Until now, however, it wasn’t available as a drop-in replacement for Jazz Basses.

With the J-Core, you can finally bring the renowned flexibility and performance of the Flexcore into the Fender universe — elevating your sound without changing what you love about your instrument.

CONFIGURATION

2 Pickup - 4 Knob (with side mounted jack)

Volume/Tone Stack - Blend - LowMid/HighMid Stack - Treble/Bass Stack