Fosi Audio - IM4 Open-Back In-Ear Monitor

On a Tight Budget? Fosi Audio IM4 Open-Back In-Ear Monitors Provide Balanced Sound, All-Day Wearability, Pocket-Sized Ease, and Ultra-Lightweight Comfort Via a Smart Dual-Chamber Design

Get satisfying sound, go-anywhere portability, and all-day comfortability for an inexpensive cost with the Fosi Audio IM4 open-back in-ear monitors. A dual-chamber design with a nine-port front for balance and sealed rear for treble extension; an N52 dual magnet for control; a 10mm beryllium diver for crisp playback all help account for relaxed, detailed performance marked by controlled lows, rich highs, and wide soundstaging. On top of that, a 3.5mm, four-strand, 392-core, 5N OFC silver-plated cable provides excellent signal transmission.

All this from a pocket-sized device whose construction minimizes internal reflections and pressure, leading to openness and naturalism. With each ear piece weighing just 7 grams, IM4 also touts a rear chamber filled with damping material to further eliminate harshness. A machined-aluminum shell, hypoallergenic finish, and orange metal grille add style. Three types of ear tips, two sound nozzles, and carrying pouch come standard. So does a two-year manufacturer warranty. Budget IEMs never sounded so good.