Whether you’re talking about Bluetooth Speakers built for the great outdoors or speakers that think outside the box, we’ve covered a lot of unconventional, sound-producing devices over the years. Oswalds Mill Audio Ironic Speaker is quite possibly the most unique speaker we’ve ever covered. The OMA Ironic Speaker is an open baffle type speaker cast from a special kind of iron with no enclosure with a high graphite content that, if we’re being completely honest, kind of looks like what would be created if you told a Science Fiction prop artist to create a speaker. Here’s what the OMA team had to say about it: “The unique form of the Ironic is impossible to cast using traditional pattern making methods. The molds are 3D printed in sand, and every mold is consumed/destroyed in the casting process. Every single Ironic thus requires a new, 3D printed mold to be made.This is an extremely expensive process.” This is most certainly one of the priciest speakers we’ve ever talked about, but with only 10 examples being made and it being created to the caliber it is, it’s one worth considering.