Campfire Audio has announced the new IO and updated Polaris IEMs at the Tokyo 2019 Spring Fujiya Avic Headphone Festival.
The IO is a dual-balanced armature driver IEM (one high frequency, one low frequency) which includes a silver-plated copper litz wire cable and beryllium copper MMCX connectors. The design uses Campfire Audio’s Tuned Acoustic Expansion Chamber (T.A.E.C.) to improve sound quality. It retails at US$299.
The updated Polaris switches to an all-metal design, the spout now made with black PVD stainless steel. Like the original, it uses a combined balanced-armature driver plus a dynamic driver, in this case 9.2mm. Like the IO, it comes with a silver-plated copper litz wire cable and beryllium copper MMCX connectors. It retails at US$499.
Unboxing videos are below. The accessories for both IEMs are identical, including foam, silicon, and Final Type E silicon tips, as well as a new style of leather case.