Fishman Prefix Pro Blend Pickup System Narrow Format - Slim Fit

In this review of the Fishman Prefix Pro Blend Pickup System, Narrow Format, the bottom line is simple: this is a purpose-built preamp for players who need a full-featured acoustic-electric solution that fits slim-bodied guitars. The system keeps the same tonal tools as larger Prefix models in a bezel that occupies about one third less space, making it the top choice for compact dreadnoughts, small-jumbo and thin acoustics where standard preamps can look crowded. The reviewer found the Pickup/Mic blend and Contour EQ especially useful for achieving a natural amplified acoustic sound.

Key Features

• Narrow bezel: The reduced 2 x 3 (50mm x 76mm) footprint saves space on slim-bodied instruments while still housing the controls needed for live and studio use.
• Pickup and internal mic: The system pairs an Acoustic Matrix Undersaddle Pickup with an internal microphone to deliver a mixable, realistic acoustic tone that adapts to different venues.
• Pickup/Mic blend control: Users can dial in the exact balance between the undersaddle pickup and the internal mic to reduce boominess or bring out body and ambience.
• Stereo or mono output: Stereo-capable wiring and the included Switchjack stereo endpin jack provide flexibility for direct stereo DI or summed mono outputs to amplifiers and PA systems.
• Wide-range semi-parametric Contour EQ: The wide-range Contour EQ lets players shape mids and tone with greater precision than a basic bass/treble stack.

Who It's For

The Prefix Pro Blend Narrow Format is aimed at acoustic players who own slim-bodied or cutaway instruments and want a high-quality amplification system without a large bezel dominating the soundhole area. It suits singer-songwriters, gigging soloists and session players who need the flexibility of a blended undersaddle pickup and internal mic plus a semi-parametric EQ for tone sculpting.

Players who prefer or require surface-mounted soundboard sensors, simple passive piezos without onboard blending, or instruments with ample cavity room for larger preamps should look elsewhere; this narrow-format unit is specifically designed to preserve space while offering comprehensive tonal control.

Pros & Cons

Pros

• Compact bezel fits slim-bodied acoustic-electrics with minimal intrusion.
• Blend of Acoustic Matrix undersaddle pickup and internal mic produces a natural amplified acoustic sound.
• Stereo Switchjack endpin and mono compatibility add routing flexibility for live and studio setups.
• Wide-range Contour EQ offers more precise tone shaping than basic preamps.

Cons

• Smaller bezel may offer slightly less tactile space for controls compared with full-size Prefix models.
• Internal mic performance depends on the guitar's body and room acoustics, so placement and blending are necessary to avoid feedback in some situations.

Specifications

Model format	Narrow 2 x 3 bezel (50mm x 76mm)
Includes	Acoustic Matrix undersaddle pickup and Switchjack stereo endpin jack
Mic	Internal microphone with Pickup/Mic blend control
EQ	Wide-range semi-parametric Contour EQ
Output options	Stereo or mono signal paths
Intended fit	Slim-bodied acoustic-electric guitars

Our Verdict

The Fishman Prefix Pro Blend Narrow Format is an excellent value for players needing a discreet, tone-focused preamp for slim-bodied guitars. With an undersaddle pickup, internal mic, Pickup/Mic blend and a semi-parametric Contour EQ, it delivers versatile, natural amplified tone and flexible routing in a compact package, making it a sensible upgrade for gigging acoustic players who want control without a bulky bezel.

Frequently Asked Questions

Will this fit a slim-bodied acoustic?
Yes, the bezel is 2 x 3 (50mm x 76mm) and occupies roughly one third less space than standard Prefix models, designed specifically for slim-bodied guitars.

Can I use it in stereo?
Yes, the system includes a Switchjack stereo endpin jack and supports stereo or summed mono outputs depending on your routing needs.

Does the internal mic replace the pickup?
No, the internal mic complements the Acoustic Matrix undersaddle pickup and the Pickup/Mic blend control lets you mix them to taste for a natural amplified sound.