LittleDot MK III SE is a fully balanced hybrid headphone amplifier by this legendary Chinese manufacturer. It pushes up to 2.5W per channel and it's priced at $499.
Five x Five is the newest release from Fir Audio. It uses a 1DD + 4BA driver configuration, and its design is like nothing else on the market. This little bunny costs $999.
Unique Melody MEST is the first hybrid IEM that uses four different types of drivers - bone conduction, EST, balanced armature, and dynamic. It is priced at $1399 for a universal version, and $1699 for custom.
Dorado 2020 is a new revision of Campfire Audio first hybrid IEM - Dorado. It is equipped with a 10mm dynamic driver and one armature with no cross-over. It is priced at 1099$.