oBravo Ra C-Cu
The Ra C-Cu costs $9,999, which makes it the world’s most expensive IEM. They’re stunning headphones, to say the least, but are ones only the rich can afford. It’s quite technologically advanced. The mylar ribbon diaphragm has a dipole magnetic field. It’s different than conventional designs and moves air faster.
Because of the magnetic field, it creates a very tight and tense pressure environment. It has a warmer sound when compared to other makes and models, because of the wood-based enclosure. It has a ceramic enclosure with a finishing that protects the ceramic (Headfonics).