sE Electronics FluxCore FCA1

sE Electronics FluxCore FCA1 – Ultra-HiZ Active DI Box

The FluxCore FCA1 is a premium active direct box designed to preserve the true character of your instrument while delivering the flexibility and reliability required by modern audio professionals. Whether used on stage, in the studio, or on tour, the FCA1 ensures exceptional signal integrity, outstanding headroom, and remarkably low noise.

At the heart of the FCA1 is a custom-designed, shielded heavy-duty transformer that provides galvanic isolation, excellent noise rejection, and exceptional sonic transparency. Combined with innovative Ground Lift circuitry, the FCA1 effectively minimizes hum, ground loops, and radio-frequency interference, ensuring clean and consistent performance in demanding environments.

Features

• Ultra-HiZ active DI box
• Switchable input impedance: 10 MΩ, 100 kΩ, or 10 kΩ
• DYNAMITE gain boost with +15 dB or +30 dB gain
• Switchable attenuation pad: -15 dB / -30 dB
• POLAR phase reverse switch
• Shielded high-headroom transformer
• Ground Lift for hum and interference reduction
• Front and rear +48 V phantom power indicators
• Compact stackable design
• Road-ready steel enclosure

Ultra-HiZ Input

The FCA1 features an exceptionally high input impedance of up to 10 MΩ, preserving the natural tone, dynamics, and frequency response of passive guitar pickups, piezo-equipped instruments, and other high-impedance sound sources. Selectable impedance settings allow the input stage to be optimized for virtually any instrument.

DYNAMITE Gain Boost

An integrated DYNAMITE gain stage provides up to 30 dB of ultra-clean gain directly at the source. By increasing signal level before long cable runs or electrically noisy environments, the FCA1 helps maintain maximum signal quality from instrument to mixing console.

Built for Professional Applications

The compact steel chassis is designed for the rigors of professional stage, studio, and touring use. Mounting options include a non-slip studio pad, hook-and-loop pedalboard mounting, rack mounting for up to four units in a single 1U space, and stackable multi-channel configurations.

Specifications

• Type: Active DI box
• Input Impedance: 10 MΩ / 100 kΩ / 10 kΩ
• Gain Boost: +15 dB / +30 dB
• Attenuation Pad: -15 dB / -30 dB
• Phase Reverse: Yes (POLAR)
• Ground Lift: Yes
• Power: +48 V Phantom Power
• Construction: Steel enclosure
• Finish: Matte Black

What's Included

• FluxCore FCA1 Active DI Box
• Non-slip mounting pad
• Hook-and-loop mounting pads
• 4 rack-mounting screws
• sE logo stickers
• User manual