Monolith™ by Monoprice™M1570C Over the Ear Closed Back Planar HeadphonesMonolith™ M1570C Over the Ear Closed Back Planar Headphones use a 106mm planar magnetic driver enclosed in a gorgeous, closed back housing. It features a plush, padded headband and earpads for comfortable listening over extended periods of time. With an extended soundstage, lush, rich sound, and excellent build quality, the Monolith M1570C brings a massive price‑to‑performance ratio to the headphones market.Planar DriversClosed Back DesignComfortRemovable Earpads PLANAR DRIVERSMonolith™ M1570C Headphones features newly designed, 106mm planar drivers. Utilizing a dual linear symmetry magnet array, the M1570C planar driver has been engineered and tuned to deliver a fantastic soundstage, extended airy highs, and tight, deep bass in a closed back enclosure. PLANAR DRIVER SIZE106mmFREQUENCY RESPONSE5Hz ~ 50kHzMAXIMUM SPL>130dBMAGNET TYPEHigh‑grade N52 NeodymiumSENSITIVITY97dB/mWNOMINAL IMPEDANCE60Ω.