JVC just announced a new dual dynamic transducers based IEM called the HA-FXT90. The drivers are in what JVC refers as the 'TWIN system' where no crossover seems to be used but instead the driver themselves have different diaphragm materials that reproduce different region of sound, then mix together naturally inside the IEM. So far an early preview from Japan has suggested that it has a very powerful bass. Official launch is 20th April 2011 so we ain't really that far away from learning more about them. The one good news is this is not a particularly expensive IEM. MSRP is 10000Yen ( = US$120) and we can expect it to be cheaper on the street. The only question is, will JVC releases it to oversea market?
Check out JVC's site for close up rendering.