Audient iD4 MkII — Editorial Review
The Audient iD4 MkII is a compact USB-C interface built around one of Audient's console-grade mic preamps and a discrete JFET instrument input — a single-input box that punches well above its budget on pure sound quality.
Featured Video Review
Console-grade preamp and JFET DI
Sound on Sound and MusicRadar note the MkII keeps Audient's clear, spacious, noise-free mic preamp and the smooth, warm JFET instrument input, while upgrading the internal converters to put it back on top of the budget pile. The JFET design stays quiet and punchy with plenty of headroom, and even clips with a natural, pleasing distortion. Two headphone outputs and Audient's monitor-mix and ScrollControl features round out a deliberately focused unit. In Julian Krause's measurement-focused review and test — featured above — the iD4 MkII and iD14 MkII are bench-tested for real audio performance.
Honest cons
- One mic preamp. A single XLR/line input plus the instrument DI — no simultaneous two-mic recording.
- Basic feature set. No onboard DSP, no loopback-style streaming mixer beyond the essentials.
- No MIDI I/O. Keyboard players needing DIN MIDI must look elsewhere.
- Manual gain only. No auto-gain or clip-protection helpers.
Where this interface fits
- Solo musicians and singer-songwriters recording one source at a time at high quality.
- Guitarists who want the character-rich JFET DI into an amp sim.
- Desktop setups valuing preamp transparency over channel count.
- Not two-mic podcast/duo recording, a MIDI hub, or anyone needing onboard effects.
Sources & Citations
- Sound on Sound, "Audient iD4 & iD14 MkII," soundonsound.com (accessed 2026-05-26)
- MusicRadar, "Audient iD4 MkII review," musicradar.com (accessed 2026-05-26)
Last verified: 2026-05-26
