"A quick, simple way for guitarists to get a high-quality signal into their amp simulator of choice": Audient iD4 MkII review

Slick design and some nice added features make for a great value guitar interface

Audient iD4 MkII audio interface
(Image: © Chris Corfield)

Guitar World Verdict

For a shade under $200, the Audient iD4 MkII offers guitarists a quick, simple way to get a high-quality signal into their amp simulator of choice. It’s ideal for home studios and has some cool ‘hidden’ features to make life easier for you.


  • +

    Simple to use

  • +

    Great for guitars

  • +

    Dual headphone outputs are useful


  • -

    Not much to criticise at this price!

You can trust Guitar World Our expert reviewers spend hours testing and comparing guitar products so you can choose the best for you. Find out more about how we test.

The second iteration of Audient’s iD range of budget interfaces has a lot to live up to. The first versions were extremely well respected, offering a combination of thoughtful design and some nice quality-of-life touches that elevated them above many others in the crowded entry-level interface bracket. Thankfully, the qualities of the Audient iD4 MKII are apparent straight out of the box. 

What we have is a simple enough two-in/two-out USB audio interface, with an XLR/jack combi input on the rear of the device and single ¼” jack input on the front. Additionally, on the front, you get a neat dual-output headphone section, which has both a ¼” output and a 3.5mm output – these can be used simultaneously, or you could use one as an auxiliary output to send audio out to a guitar pedal. The back of the unit then houses the standard stereo jack outputs and connection for the interface’s USB-C cable. All of the main controls – gain for both channels, a monitor mix knob and a large, chunky volume encoder – sit atop the surface of the unit, keeping them within easy reach for those crucial tweaks. 

Thank you for reading 5 articles this month**

Join now for unlimited access

US pricing $3.99 per month or $39.00 per year

UK pricing £2.99 per month or £29.00 per year 

Europe pricing €3.49 per month or €34.00 per year

*Read 5 free articles per month without a subscription

Join now for unlimited access

Prices from £2.99/$3.99/€3.49

Chris Corfield

Chris Corfield is a journalist with over 12 years of experience writing for some of the music world's biggest brands including Orange Amplification, MusicRadar, Guitar World, Total Guitar and Dawsons Music. Chris loves getting nerdy about everything from guitar gear and synths, to microphones and music production hardware.