sE FCP1 Fluxcore HiZ Passive DI Box

Capturing Every Detail, Exactly as Intended. - The sE Electronics FCP1 FluxCore HiZ Passive DI Box

The FCP1 HiZ Passive DI provides uncompromising audio quality in an elegant passive design. Its high-impedance input minimizes load on the source, maintaining the clarity, punch, dynamics, and tonal balance of your instrument without requiring phantom power or batteries.

• HiZ input minimizes load on instruments to maintain clarity, punch, and detail
• Switchable L+R mono summing combines stereo sources into a single mono output
• Ideal for keyboards, laptops, media players, and backing tracks
• Dedicated 3.5 mm (1/8") TRS stereo input for connecting stereo sources
• Switchable attenuation pad: 0, -15, -30 dB
• POLAR switch allows signal polarity inversion
• Shielded heavy-duty transformer and innovative on + Ground Lift circuitry
• High headroom, low distortion, and pristine sound quality
• Minimizes hum and radio frequency interference
• Non-slip mounting pad included for studio use
• Hook-and-loop mounting pads included for pedalboards and gig racks
• Mount up to four units on a standard 1U rack shelf; screws included
• Secure stackable design for multi-channel setups
• Matte-black stealth finish
• Heavy-gauge steel enclosure

In addition to selectable attenuation pad and polarity switch, the FCP1 offers stereo-to-mono summing, allowing keyboards, laptops, media players, and other stereo sources to be combined into a single balanced output while saving valuable input channels on mixers, audio interfaces, and stage boxes. Moreover, the dedicated 3.5 mm stereo input also allows stereo sources, such as laptops, to be summed to the XLR output as a mono signal.

At the heart of the FCP1 is a custom-designed, shielded heavy-duty transformer providing galvanic isolation, delivering exceptional headroom, low distortion, and outstanding noise rejection. Together with the innovative on + Ground Lift circuitry, hum, ground loops, and radio-frequency interference are effectively minimized, ensuring clean, transparent audio in even the most challenging live and studio environments.

Both models feature switchable attenuation pads for handling high-output sources such as guitar and bass amplifiers without distortion, while their custom transformers maintain exceptional headroom and signal integrity under demanding conditions.

Designed with versatility in mind, the FCP1 offers a wide range of mounting options. A non-slip mounting pad is included for desktop and studio use, hook-and-loop pads allow secure installation on pedalboards and gig racks, and up to four units can be mounted in a single 1U rack space using the supplied mounting screws. Its stackable design also makes multi-channel stage setups neat, secure, and easy to configure.

Its compact footprint and heavy-gauge steel construction make the FCP1 ideal for professional stage, studio, and touring applications. The robust all-metal design provides exceptional durability, while the discreet matte-black stealth finish blends seamlessly into any stage, studio, or pedalboard setup.

SPECIFICATIONS

General

• Type: Passive
• Frequency Range: 18–30,000 Hz (-0.3 dB)
• Input Impedance, ATT PAD 0 dB: 650 kohms
• Input Impedance, ATT PAD -15 dB: 12 kohms
• Input Impedance, ATT PAD -30 dB: 10 kohms
• Attenuation Pad: 0 / -15 / -30 dB
• Max Input Level (0.5% THD), ATT PAD 0 dB: 30 dBV (33 V)
• Max Input Level (0.5% THD), ATT PAD -15 dB: 45 dBV (185 V)
• Max Input Level (0.5% THD), ATT PAD -30 dB: 60 dBV (1,044 V)
• Gain: -20 dB
• Electrical Output Impedance: 168 ohms
• Recommended Load Impedance: Greater than 1k ohms

Connectivity

• Input / L: 6.3 mm (1/4 in.) TS jack
• Thru / R: 6.3 mm (1/4 in.) TS jack
• Additional Input: 3.5 mm (1/8 in.) TRS stereo jack
• Output: 3-pin male XLR connector

Dimensions & Weight

• Dimensions (L x W x H): 127 x 100 x 39 mm (5.0 x 3.9 x 1.5 in.)
• Weight: 795 g (1.75 lbs.)

Included Accessories

• Non-slip mat
• Hook-and-loop pads
• 4 rack-mount screws
• sE logo stickers
• User manual

We are Chuck Levin's Washington Music Center

Since 1958, Chuck Levin’s Washington Music Center has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Music®—from instruments and recording gear to pro audio, rentals, and repair services.

Our team of musicians and industry experts lives and breathes gear, helping you build the perfect setup for your next performance, studio session, or installation. As an authorized dealer for top brands, we also offer our award-winning CHUCKSCLUSIVE line—exclusive, limited-edition instruments and collaborations recognized with the NAMM Top 100 Dealer Innovation Award for redefining what a music retail experience can be.

Chuck Levin’s isn’t just a store—it’s a community built by players, engineers, and creators who share a lifelong passion for sound. Stop by our legendary Wheaton, MD showroom or contact us anytime for expert advice, product questions, or the best possible deal on your next piece of gear.