Product Description

Simplefly SF2404PRO Professional Dual Input Audio Interface

The Simplefly SF2404PRO Professional Dual Input Audio Interface is a compact, professional solution for musicians, producers, and streamers who demand clean, high-resolution audio. It supports 24-bit/192kHz stereo recording and playback, with a low-noise codec and balanced differential amplification circuitry delivering a dynamic range of 110dB and an A-weighted signal-to-noise ratio close to 110dB. The result is crisp, detailed sound that captures every nuance of your performance.

A bright, full-colour 2.0-inch LCD screen gives you a real-time view of input and output levels, sample rates, and device status. It's far more informative than basic LED meters, making setup and monitoring easy and intuitive.

The SF2404PRO features two XLR/TRS combo inputs with independent gain control from -12dB to +40dB, along with switchable 48V phantom power. These inputs are ready for condenser and dynamic microphones, instruments, and line-level sources. Outputs include two balanced 6.35mm jacks for studio monitors and a dedicated headphone output with its own volume control for accurate monitoring. For expanded connectivity, the interface includes MIDI input and output via standard 5-pin ports, and a TOSLINK optical input that supports both SPDIF and ADAT digital audio formats. Whether you're syncing external gear or integrating digital sources, the SF2404PRO has you covered.

An ASIO 2.0 driver provides low-latency performance, adjustable from 1 to 5 milliseconds, with support for multiple input and output channels. Whether you're recording, mixing, or streaming, you'll get reliable, real-time audio without dropouts or lag. Dual USB Type-C ports support bidirectional 24-bit/48kHz transmission, allowing you to connect microphones or instruments, play backing tracks from a device, and send a mixed signal directly to a live platform. With OTG support, you can stream or record high-quality audio directly to your smartphone, tablet, or computer without needing extra gear.

The SF2404PRO also features a dedicated Sky Mode switch, which subtly enhances high frequencies at the input stage to add clarity and presence to vocals and condenser microphones, without introducing harshness. Power is supplied via the included adapter, or via USB-C, which draws from mobile devices capable of 5V1A output. If additional power is needed, the interface can be connected to a power adapter or portable battery via the PD port for stable operation in any setting.

The Simplefly SF2404PRO combines studio-grade sound quality with smart features and flexible connectivity, making it a powerful all-in-one interface for home recording, mobile production, and live streaming.


The Tech Features

Brand: Simplefly

Model: SF2404PRO

Inputs: 2x mic/line/instrument inputs, MIDI input, TOSLINK Optical input, OTG Data & Power Supply,

Outputs: 2x low-noise balanced 6.35mm TRS outputs, 1 x 6.35mm headphone jack, USB Type-C, MIDI Output

Controls:

  • Switchable Sky mode - high-frequency boost for mic/line recording 
  • Direct Monitor
  • LIVE mode for OTG live monitoring
  • Independent gain knobs

Dynamic Audio Range: 110dB

Signal to Noise Ratio: 110dB

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