Campfire Audio Astrolith Dual Planar Magnetic IEM

Campfire Audio is known for packing a wealth of unparalleled engineering and audio expertise into their truly top-tier IEMs—and in the new Astrolith IEM, they’ve packed not one, but two planar magnetic units into each earphone. Featuring a 6-millimeter planar driver with what Campfire is calling a Particle Phase Resonator tuning, the Astrolith brings big performance to a small package. There’s also a more-traditional 14-millimeter planar magnetic driver here (because two is better than one, right?), and they’ve paired it with their remarkable Additive Acoustic Optical Inclusion enclosure for a powerful sub-bass and a well-blended midrange. All of this works together with impressive detail and power, as Campfire Audio has worked meticulously with a crossoverless design to avoid any artifacts you’d normally see in a system like this—and they’ve packed it all into a 3D-printed polymer body that looks every bit as beautiful as this IEM sounds.

Attention to detail: it’s a quality that defines most audiophile listeners. At Campfire Audio, it defines the audiophile builders, too. Founded by Ken Ball—owner and founder of cable- and DAC-manufacturer Audio Line Out—Campfire Audio creates innovative earphones with patented technologies and world-class performance. Powered by a small team of highly skilled craftspeople, the brand continuously experiments with materials and techniques to push the boundaries of the listening experience. Based in Portland, Oregon, the Campfire Audio team designs and assembles everything by hand. Each earphone is the culmination of countless iterations, hours of listening, and rigorous performance testing. It’s an audiophile-approved standard of quality—with results that sound the part.