Trickfish | J-Core Jazz Bass Plate Preamp | Mike Pope-Designed FlexCore Circuit | 2-Band & Top Mount Jack
The Trickfish J-Core Jazz Plate Preamp brings the acclaimed Flexcore onboard bass preamp into a convenient drop-in Jazz Bass control plate format. Designed for players who want a serious active preamp upgrade without modifying their instrument, the J-Core installs into a standard Jazz Bass control cavity with no soldering required.
At the heart of the J-Core is the Mike Pope-designed Flexcore preamp circuit, known for its clarity, warmth, punch, and musical response. Available in either 2-band or 4-band EQ configurations, it gives Jazz Bass players a highly flexible tonal platform while preserving the familiar feel and layout of the instrument.
The 4-band version offers deep control over bass, low mids, high mids, and treble, with internally selectable frequency centres for each band. Rocker-style mini switches replace traditional jumper selectors, making it easier to fine-tune the EQ response to suit your bass, playing style, and preferred tone.
For players who prefer a simpler setup, the 2-band version provides powerful bass and treble shaping in a streamlined format. Both versions also include selectable output gain options, allowing you to set the preamp response and level to better match your instrument, amp, and signal chain.
The J-Core also retains the importance of a proper passive tone control, with a stock .022 capacitor and the option to customise the response with an additional through-hole parallel capacitor. Complete with a prewired output jack, battery connector clip, and preinstalled Jazz Bass control plate, the Trickfish J-Core is a premium upgrade for players who want active flexibility without losing the classic Jazz Bass identity.
Features:
- Drop-in active preamp for Jazz Bass-style instruments
- Based on the acclaimed Trickfish Flexcore onboard bass preamp
- Mike Pope-designed preamp circuit
- Available in 2-band or 4-band EQ configurations
- No soldering required
- Designed to fit into an existing Jazz Bass control cavity
- Includes prewired output jack
- Includes battery connector clip
- Preinstalled on a Jazz Bass control plate
- Internally selectable EQ frequency centres
- Rocker-style mini switches for easier internal adjustment
- Selectable output gain: 0dB, +3dB, +6dB, or +8dB
- Passive tone control with stock .022 capacitor
- Can be customised with an additional through-hole parallel capacitor
- Matte black knobs available as an option
- 2-band version available with top-mounted jack
- 4-band version available with side-mounted jack
Frequency Specifications:
- Treble: +/- 15dB at 6kHz or 10kHz
- High Mid: +/- 15dB at 600Hz or 900Hz
- Low Mid: +/- 12dB at 330Hz or 473Hz
- Bass: +/- 12dB at 46Hz or 90Hz
Original: $270.96
-65%$270.96
$94.84Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Trickfish J-Core Jazz Plate Preamp brings the acclaimed Flexcore onboard bass preamp into a convenient drop-in Jazz Bass control plate format. Designed for players who want a serious active preamp upgrade without modifying their instrument, the J-Core installs into a standard Jazz Bass control cavity with no soldering required.
At the heart of the J-Core is the Mike Pope-designed Flexcore preamp circuit, known for its clarity, warmth, punch, and musical response. Available in either 2-band or 4-band EQ configurations, it gives Jazz Bass players a highly flexible tonal platform while preserving the familiar feel and layout of the instrument.
The 4-band version offers deep control over bass, low mids, high mids, and treble, with internally selectable frequency centres for each band. Rocker-style mini switches replace traditional jumper selectors, making it easier to fine-tune the EQ response to suit your bass, playing style, and preferred tone.
For players who prefer a simpler setup, the 2-band version provides powerful bass and treble shaping in a streamlined format. Both versions also include selectable output gain options, allowing you to set the preamp response and level to better match your instrument, amp, and signal chain.
The J-Core also retains the importance of a proper passive tone control, with a stock .022 capacitor and the option to customise the response with an additional through-hole parallel capacitor. Complete with a prewired output jack, battery connector clip, and preinstalled Jazz Bass control plate, the Trickfish J-Core is a premium upgrade for players who want active flexibility without losing the classic Jazz Bass identity.
Features:
- Drop-in active preamp for Jazz Bass-style instruments
- Based on the acclaimed Trickfish Flexcore onboard bass preamp
- Mike Pope-designed preamp circuit
- Available in 2-band or 4-band EQ configurations
- No soldering required
- Designed to fit into an existing Jazz Bass control cavity
- Includes prewired output jack
- Includes battery connector clip
- Preinstalled on a Jazz Bass control plate
- Internally selectable EQ frequency centres
- Rocker-style mini switches for easier internal adjustment
- Selectable output gain: 0dB, +3dB, +6dB, or +8dB
- Passive tone control with stock .022 capacitor
- Can be customised with an additional through-hole parallel capacitor
- Matte black knobs available as an option
- 2-band version available with top-mounted jack
- 4-band version available with side-mounted jack
Frequency Specifications:
- Treble: +/- 15dB at 6kHz or 10kHz
- High Mid: +/- 15dB at 600Hz or 900Hz
- Low Mid: +/- 12dB at 330Hz or 473Hz
- Bass: +/- 12dB at 46Hz or 90Hz
