The Simplefly SF4801 Active Direct Injection (DI) Box is the perfect solution for musicians and audio engineers who require a reliable, high-performance device to convert high-impedance, unbalanced signals from instruments such as guitars, bass guitars, and keyboards into low-impedance, balanced XLR outputs. Ideal for both live performances and studio recordings, this compact and versatile DI box ensures exceptional signal clarity while minimizing noise during transmission.

Features

• Active Direct Injection: Converts unbalanced 6.35mm (1/4") instrument signals to balanced XLR, enhancing sound quality.

• 48V Phantom Powered: Operates on standard 48V phantom power, eliminating the need for an external power supply.

• Ground Lift Switch: Removes hum and noise caused by ground loops, providing cleaner sound.

• High Headroom: The advanced internal switching power supply increases headroom, reduces distortion, and ensures a smooth, linear frequency response from 20Hz to 20kHz.

• Dual-Channel Design: Offers versatile functionality and reliable performance for various audio sources, including instruments, keyboards, and more.

• Low Noise & High SNR: With a noise level of just 24uVrms and a signal-to-noise ratio (SNR) of 102dB, this DI box delivers clear, accurate sound.

• REV180° Switch: Reverses pins 2 and 3 of the XLR connector, ideal for connecting to older equipment or merging microphone and instrument signals into a single input to prevent phase cancellation.

Perfect for musicians and sound engineers who need high-quality signal conversion with minimal distortion and noise, the SF4801 is your go-to tool for professional audio performance.

Specifications

Model: SF4801

Noise: 24uVrms

SNR: 102dB

Distortion: 0.0055%

Harmonic Distortion: < 0.013% (@1.8Vrms, 1kHZ)

Frequency Response: 20Hz ~ 20kHz (-3dB)

Maximum Input Level: +7dBu

Input Impedance: 220KΩ

Ouput Impedance: 600Ω

Input Connection: 6.35mm (mono)

Output Connection: XLR (balanced)

Power: 48V Phantom Power

Dimensions: 105mm * 96mm * 46mm

Weight: 480g

Package Includes 

1x  Simplefly SF4801 Active DI Box

1 x User Manual

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As an authentic Australian-based company, we take pride in offering quality instruments at prices significantly lower than traditional retail outlets. Each order is meticulously packaged to ensure a secure journey to your hands, reflecting our commitment to delivering exceptional value and service.