What Are Planar Magnetic Headphones & How Do They Work?
Audeze LCD-5 High-performance open-back planar magnetic headphones (with XLR connector and 1/4" adapter) at Crutchfield
Open Box Blue Ella Planar Magnetic Headphone Level 1 | Guitar Center
Amazon.com: Monolith M1060 Over Ear Planar Magnetic Headphones - Black/Wood With 106mm Driver, Open Back Design, Comfort Ear Pads For Studio/Professional : Everything Else