Iremember when I had the pleasure of testing Mackie’s first three in-ear headphones about two years ago: The MP-120 , the MP-220 and the MP-240 were aimed at musicians and sound engineers who were looking for monitor headphones for use on stage, with FoH/monitor mixing desks or in the recording studio. Now Mackie has added three more technically advanced headphones to the MP-series: The MP-320 that I am testing here is higher in the price hierarchy than the MP-240 and the most affordable of the three new ones.

Mackie are attempting a balancing act: with the MP-320, the manufacturer wants to close the gap between professional in-ear-monitor headphones (IEM for short) and Smartphone-compatible everyday headphones.
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