Fishman PREFIX PLUS-T ONBOARD PREAMP NARROW
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- This item is covered for 3 years
What you need to know
What you need to know
- Ultra-low noise acoustic preamp for cleaner sound and preserved dynamics, both on stage and in the studio
- Full equalization : volume, bass, treble, and semi-parametric contour to precisely shape frequencies
- Effective feedback control thanks to the Notch filter and phase control, ideal for live settings
- Built-in chromatic tuner usable without plugging in the guitar, convenient for tuning anywhere
Manufacturer Information
Fishman Amps
https://www.fishman.com
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Algam SAS
Email: contact@algam.net
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A Fishman standard for electro-acoustic guitars, in a narrow format
Renowned for its quality, reliability, and performance, the Fishman Prefix Plus-T is designed for electro-acoustic guitarists who want immediate sound control from the instrument. This Narrow version fits easily on compatible guitars while maintaining clear ergonomics and quick adjustments, essential both in rehearsals and on stage.
A precise adjustment tool to adapt to your playing and environment
With its bass, treble controls and semi-parametric contour, this preamp allows you to isolate, boost, or cut specific frequencies to restore clarity, soften harshness, or emphasize attack in fingerstyle as well as strumming. The brilliance knob adds the necessary presence to cut through a mix, while the built-in chromatic tuner facilitates quick tuning changes between songs.
Built-in feedback control: Notch and phase to secure your performances
On stage, feedback can quickly become an issue, especially with close stage monitors. The Notch filter helps target and reduce the offending frequency, and the phase control optimizes the instrument's response according to the PA system and positioning. A low battery indicator prevents unpleasant surprises, and the 9 V battery power supply offers comfortable autonomy to keep sessions going.
Technical specifications
| Category | acoustic preamp |
| Technology | Solid state |
| EQ | 5 channels |
| Model | Fishman Prefix Plus-T Onboard Preamp Narrow |
| Electronics | ultra-low noise |
| Format | narrow |
| Nut width | 2.3 mm |
| Controls | volume, bass, treble |
| Equalizer | semi-parametric contour (isolate, boost or cut specific frequencies) |
| Feedback control features | Notch filter, phase control |
| Brilliance | brilliance knob |
| Tuner | built-in chromatic tuner, usable without plugging in the guitar |
| Indicators | low battery indicator |
| Power supply | 9 V battery |
| Battery life | 150 hours |
| Installation | professional installation recommended |
| Positioning | Fishman quality, reliability, and performance |
Questions frequently asked
Is the Fishman Prefix Plus-T Narrow suitable for a narrow-body guitar?
The Narrow version is designed in a narrow format for compatible guitars. Professional installation is recommended to ensure proper integration of the preamp.
What equalization settings are available?
The 5-band EQ includes bass and treble controls, a semi-parametric mid control, and a brilliance knob. The mid control allows isolating, boosting, or cutting specific frequencies.
How does the preamp reduce feedback on stage?
The Notch filter targets the frequency causing feedback to reduce it. The phase control adjusts the guitar's response depending on the sound system and monitor placement.
Does the built-in tuner work without the guitar being plugged in?
The built-in chromatic tuner remains usable without the guitar being plugged in.
What battery does the Prefix Plus-T use and what is its battery life?
Power is supplied by a 9 V battery. The stated battery life is up to 150 hours. A low battery indicator alerts when the battery level is low.



