Audient iD4 MKII vs MOTU M2

What published reviews say about each, where the two differ, and who each one suits.

Summed up from 16 published reviews

Audient

iD4 MKII

The Audient iD4 MKII offers strong mic and instrument preamps in a compact body, but its limited I/O and routing suit focused solo work.

Best for: Solo guitarists, home studios, and streamers wanting premium preamps
Skip it if: You need stereo inputs, independent headphone levels, or extensive routing

PriceToday's price on AmazonView on Amazon

What reviewers say about the Audient iD4 MKII

MOTU

M2

The MOTU M2 delivers excellent sound and low latency in a compact two-channel package, with standout metering and loopback but limited expansion.

Best for: Solo recording, podcasting, streaming, and compact home-studio sessions
Skip it if: You need multiple inputs, expandable I/O, or advanced software routing

PriceToday's price on AmazonView on Amazon

What reviewers say about the MOTU M2

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Specs side by side

Spec	Audient iD4 MKII	MOTU M2
Mic inputs	1	2
Best for	Music	Podcasts, Streaming, Music
Loopback	No	Yes
MIDI	No	Yes
Type	Audio interface	Audio interface
Phantom power	Yes	Yes
Guitar input	Yes	Yes
Built-in effects	No	No
USB-C	Yes	Yes

Rows where the two differ come first.

Where only one fits

use: M2PodcastsStreaming
inputs: iD4 MKIIOne; M2Two
must-haves: M2Loopback

What reviewers like, and what they don't

Audient iD4 MKII

Clean, quiet mic preamps provide strong gain and headroom 1 5 6
Punchy JFET input suits guitars, DI, and amp sims 1 2 4 7
Compact all-metal construction feels sturdy and premium 1 2 5 7
Dual headphone outputs make shared listening convenient 1 2 7
Loopback and virtual inputs aid streaming and recording 3 4
Single mic preamp limits stereo and multi-source recording 3 4 5 7
Headphone outputs share one level, preventing independent adjustment 4 7
USB 3.0 requirement and missing adapter can complicate setup 1 3
Advanced routing and precise monitor controls remain limited 1 3 4 6

MOTU M2

Excellent DAC/ADC performance and clean, low-noise preamps for the price. 1 3 6 7
Very low latency suits real-time recording and virtual instruments. 1 2 4 7
Loopback simplifies recording computer audio for streaming and podcasts. 1 2 4 5
Full-color meters provide clear, precise input and output monitoring. 1 3 4 5
Compact, sturdy chassis offers MIDI and flexible monitor connections. 2 3 4 5
Only two inputs and no ADAT expansion restrict larger setups. 2 5 8
No dedicated software provides advanced mixing or routing control. 1 7
No USB-C cable is included in the box. 1 3
Headphone monitoring can distort at high output levels. 4

Ranked in our guides

Guide	iD4 MKII	M2
Best audio interfaces	#2	#10

Sources

We don't test products ourselves. This page sums up 16 published reviews, read on October 21, 2026; each point above links to the reviews that make it.