You get rugged metal construction and ultra-low latency and metering with full-color LCD displays on the front panel. With two and four channels of audio I/O respectively, the M2 and M4 include individually switchable 48V phantom power on the mic inputs, mono and stereo direct monitoring, MIDI I/O and "loopback" driver channels for live streaming and podcasting.

The M2 and M4 deliver 120 dB dynamic range plus the ESS converters also drive the headphone output. You get ultra-low 2.5-ms round trip latency with a buffer set to 32 samples at 96-kHz.

Both feature two mic/line/hi-Z guitar inputs on Combo XLR/TRS jacks while the M4 has two balanced 1/4-inch line inputs. Both the M2 and M4 support 44.1kHz and up to 192kHz sample rates.

Both the M2 and M4 come with MOTU Performer Lite 10 and Ableton Live Lite 10 software, 100+ instruments (in Performer Lite), and over 6 GB of included free loops, samples and one-shots from industry leading libraries.

Built in the USA with a 2-year warranty, the M2 sells for $169.95 MSRP while the M4 sells for $219.95 MSRP.

motu.com/en-us/products/m-series/m2/specs/