• FCA1 angled front view with IN and THRU jacks, green +48V LED, and four toggle switches, sE Electronics
  • FCA1 front panel with IN, THRU, ATT PAD, LOAD, DYNAMITE, and POLAR switches
  • FCA1 angled view of XLR output end with +48V LED and GND LIFT switch, side screws visible
  • FCA1 angled view from the input end, showing the side screws and top of the black chassis, sE Electronics
  • FCA1 output panel with male XLR OUT, +48V LED, and three-position GND LIFT switch
  • FCA1 cutaway interior showing circuit board and PXF2 audio transformer, sE Electronics
  • FCA1 underside with four screw holes on the matte black base, sE Electronics
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sE Electronics FCA1 Fluxcore Ultra-HiZ Active DI Box

sE Electronics FCA1 Fluxcore Ultra-HiZ Active DI Box

SoundPro Item: 209342 | Part Number: FCA1

$199.00
$249.00 $199.00
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MSRP: $249.00 | MAP: $199.00

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  • Switchable Input Impedance Up To 10 MOhm Preserves Passive Pickup Tone
  • DYNAMITE Ultra-Clean Gain Circuit Adds Up To 30 dB For Low-Output Sources
  • Attenuation Pad Handles Hot Instruments And Line-Level Sources Without Distortion
  • POLAR Switch Corrects Phase Issues At The Source
  • Shielded Heavy-Duty Transformer With Ground Lift Eliminates Hum In Complex Rigs
  • Front And Rear Phantom Power LEDs Confirm Power Status From Either Side
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The sE Electronics FCA1 Ultra-HiZ Active DI is purpose-built for instruments that are highly sensitive to loading effects. Passive guitar pickups, piezo-equipped acoustics, and vintage-style basses all benefit from an input stage that does not pull tone, dynamics, or high-frequency content away from the signal. With switchable impedance settings reaching up to 10 MOhm, the FCA1 gives engineers and performers a direct interface that preserves what the instrument actually sounds like rather than what a standard DI allows through.

In live production and studio tracking contexts, the FCA1 functions as both a tone-preserving direct input and a flexible gain tool. The DYNAMITE ultra-clean gain circuit adds up to 30 dB in two steps, making it immediately useful for ribbon microphones or passive sources that need clean boost before hitting a preamp. The attenuation pad covers the opposite scenario, handling hot active instruments or line-level sources without distortion. A POLAR switch, shielded heavy-duty transformer, and ground lift circuitry address hum and phase issues on stage or in the rack, while front and rear phantom power indicator LEDs confirm power status at a glance from either side of the box. The FCA1 accepts phantom power or an external supply, fitting naturally into touring, studio, and installed sound workflows where flexibility and signal integrity are non-negotiable.

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Specifications

Audio
Type
Active
Frequency Range
-0.3 dB at 10 Hz - 80,000 Hz
Input Impedance (ATT PAD 0 dB)
10 MOhm / 100 kOhm / 10 kOhm
Input Impedance (ATT PAD -15 dB)
12 kOhm / 12 kOhm / 12 kOhm
Input Impedance (ATT PAD -30 dB)
10 kOhm / 10 kOhm / 10 kOhm
Controls
Gain Settings
+15 dB / +30 dB
Attenuation Pad
0 dB / -15 dB / -30 dB
Power
Phantom Power
48V accepted
Power Indicator LEDs
Front and rear

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