The Simplefly SF4801 Active Direct Injection (DI) Box is the ideal solution for musicians and audio engineers who need a reliable, high-performance device to convert high-impedance, unbalanced signals from instruments like guitar, bass guitar, and keyboards into low-impedance, balanced XLR outputs. Perfect for live performances and studio recording, this compact, versatile DI box offers exceptional signal clarity and minimizes noise during transmission.

Features

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

48V Phantom Powered: Operates via standard 48V phantom power, no external power supply needed.

Ground Lift Switch: Helps eliminate hum and noise caused by ground loops for cleaner sound.

High Headroom: The innovative internal switching power supply increases headroom and improves signal handling, reducing distortion and allowing a smooth, linear frequency response from 20Hz to 20kHz.

Dual-Channel Design: Delivers rich functionality and consistent performance for a variety of audio sources, including instruments, keyboards, and other audio devices.

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

REV180° Switch: Reverses pins 2 and 3 of the XLR connector, making it perfect for connecting to older equipment or merging microphone and instrument sources into a single input to avoid 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 solution 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.