Audient iD4 MkII USB-C Audio Interface

Audient iD4 MkII USB-C Audio Interface

The Audient iD4 MkII USB-C Audio Interface is a compact, two-in/two-out recording interface that brings Audient's Class-A console microphone preamplifier — the same discrete design used in the professional ASP8024 recording console — into a bus-powered desktop package weighing just 740g. For producers, singer-songwriters, and home studio engineers who want the best possible microphone input quality at an accessible price, the iD4 MkII delivers a transparency and headroom that consistently outperforms competing interfaces in its class. The rear XLR-¼" combo input connects to Audient's in-house Class-A preamp, capable of up to 58dB of gain and 48V phantom power for condenser microphones — all drawn from USB power alone, with no external power supply required.

Console Preamp, JFET DI, and Dual Headphone Outputs

What sets the Audient iD4 MkII apart from comparably priced USB interfaces is the character and pedigree of its input stage. The Class-A preamp circuit is not a cost-reduced approximation of the ASP8024's design — it is the same circuit, brought directly from Audient's console engineering heritage into a compact interface form factor. As a result, vocals, acoustic instruments, and room microphones captured through the iD4 MkII carry the clean, fast, neutral character of a professional console preamp rather than the coloured or congested sound of budget interface circuitry. The front-panel JFET instrument DI input adds a second independent input path, designed to replicate the input stage of a classic valve amplifier for harmonically rich direct guitar and bass recording. In addition, the iD4 MkII features two headphone outputs — a ¼" and a 3.5mm — allowing a producer and vocalist to monitor simultaneously without a headphone amplifier or splitter, a genuinely useful feature in a solo or duo recording scenario.

The monitor mix and monitor panning functions allow zero-latency monitoring of inputs alongside DAW playback, and the 24-bit/96kHz converters deliver 121dB ADC and 126dB DAC dynamic range — professional-grade conversion performance for a desktop interface. USB-C connectivity ensures compatibility with current laptops and computers, and the iD4 MkII is class-compliant for Mac, PC, and iOS devices. Whether you are recording vocals at home, capturing acoustic guitar for a client, or tracking a podcast, the Audient iD4 MkII gives you console-quality microphone input in the smallest, most accessible form Audient makes. Available at OneStopMusic South Africa.

Tech Specs:

• I/O: 2-in / 2-out

• Mic/line input: 1 × XLR-¼" combo (Class-A console preamp, 58dB gain, 48V phantom power)

• Instrument input: 1 × ¼" JFET DI (front panel)

• Monitor outputs: 2 × ¼" balanced stereo

• Headphone outputs: 1 × ¼" + 1 × 3.5mm (simultaneous)

• Resolution: 24-bit / 44.1–96kHz

• ADC dynamic range: 121dB

• DAC dynamic range: 126dB

• Connectivity: USB-C (bus powered)

• Compatibility: Mac, PC, iOS (class-compliant)

• Dimensions: 133 × 120 × 40.7 mm

• Weight: 740g

Audient

Founded in 1999 in Hampshire, England by console designer David Dearden and Gareth Davies, Audient has spent more than two decades building a reputation as one of the most respected manufacturers of audio interfaces and recording consoles in the professional audio world — a company defined above all by its commitment to delivering genuine console-grade preamplifier quality at price points accessible to working engineers and home studio producers. The company's founding product was the ASP8024 large-format analogue recording console, a professional mixing desk whose Class-A microphone preamplifier circuit became the technical foundation on which Audient's entire range of audio interfaces was subsequently built. Rather than designing a new, cost-reduced preamp for the interface market, Audient took the same discrete Class-A circuit from the ASP8024 and put it directly into its iD-series interfaces — a decision that gave the iD4, iD14, iD22, and iD44 a sonic character and transparency that competitors at the same price rarely match. The EVO series extended Audient's reach to beginners and content creators with Smarter Gain technology — an automatic gain-setting system that sets optimal recording levels with a single button press — while maintaining the clean, honest Audient signal path. The ASP880, meanwhile, brought eight channels of the same discrete Class-A preamp design into a standalone rack expander for producers who need to scale beyond the built-in inputs of their interface. From the home bedroom producer to the professional tracking room, Audient's product range provides a coherent, quality-first monitoring and recording signal chain from first microphone to final output. OneStopMusic South Africa stocks the Audient range for South African engineers and producers who demand console-quality preamplification at every level of the signal chain.

Learn more about Audient

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