Fosi Audio IM4 Open‑Back In-Ear Monitor Select Options:Standard Combo-Obsidian 0G Amplifier x 1 19V

0G Amplifier x 1 19V 4

160Watt x 2(DC19-35V

and preamps

This stereo amplifier supports up to 5 channels output

and switching relays

Fosi Audio IM4 Open‑Back In-Ear Monitor Select Options:Standard Combo-Obsidian 0G Amplifier x 1 19VDual Magnet & Dual Chamber for Hi Fi Sound: Experience audiophile clarity. Our IEM earphones feature an N52 dual magnet for powerful control and a dual chamber design for balanced sound,The 10mm beryllium driver delivers wide soundstage and crisp details. Balanced & Fatigue Free Tuning: The open back design and acoustic damping wool reduce resonance and harshness, creating a relaxed, wide sound. The hifi earbuds are expertly tuned for balanced bass,